Every tool you need to work online in one place

Every tool you need, at your fingertips. All are 100% FREE and easy to use! Merge, split, compress, convert, parse, and calculate with just a few clicks.

Creator & Social Tools
Link in Bio Builder
Build a free link-in-bio page for Instagram, TikTok & YouTube. Add all your links, customize it, and get a shareable link. No signup.
AI Tools
AI Text Detector
Detect if text was written by ChatGPT, Gemini, Claude or other AI. Analyzes burstiness and AI patterns. 100% private.
AI Prompt Generator
Generate powerful prompts for ChatGPT, Gemini, Claude, Midjourney and DALL-E. 100+ curated templates across all categories.
AI Paraphrasing Tool
Rewrite and rephrase text in Professional, Academic, Casual, Creative, and Simple styles. Instant, 100% private.
ChatGPT Prompt Library
Browse 500+ battle-tested ChatGPT prompts for writing, coding, marketing, SEO, and more. Copy and use instantly.
PDF Tools
Merge PDF
Combine multiple PDFs in the order you want with the easiest PDF merger available.
Split PDF
Separate one page or a whole set for easy conversion into independent PDF files.
Compress PDF
Reduce PDF file size while optimizing for maximal PDF document quality.
PDF to Images
Convert each PDF page into a JPG or PNG or extract all images contained in a PDF.
Rotate PDF
Rotate your PDF pages however you need. Rotate multiple PDFs at the same time.
PDF to Text
Extract all plain text content from your PDF documents instantly.
Unlock PDF
Remove password protection and unlock secured PDFs easily in seconds.
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PDF to Word
Easily convert your PDF files into easy to edit DOC and DOCX documents.
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Word to PDF
Make DOC and DOCX files easy to read by converting them to PDF documents.
Image Tools
Image Compressor
Reduce image file size while optimizing for maximal picture quality.
Image Resizer
Resize any image to exact dimensions or scale percentage instantly.
Image Converter
Convert format of your images between PNG, JPG, WebP, and GIF.
Image to PDF
Convert one or more images into a beautifully structured PDF document.
Image to Base64
Convert your image files into a clean Base64 data URL string.
Image to Text (OCR)
Extract text from any image using AI-powered OCR. Supports 8+ languages. 100% private, runs in browser.
Text Tools
ASCII to Text Converter
Convert ASCII codes (decimal numbers) back into readable plain text.
Chinese Character Counter
Count Chinese characters, standard words, letters, and bytes efficiently.
Text to Binary Converter
Convert readable text into computer binary code (0s and 1s).
Binary to Text Converter
Convert binary code (0s and 1s) back into readable English text.
Reading Time Calculator (WPM)
Calculate how long it will take to read a book, article, or text based on your Words Per Minute (WPM).
Word Counter
Count words, characters, sentences, paragraphs, and reading time.
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Case Converter
Convert text case to UPPER, lower, Title Case, sentence case, and more.
Text Diff Checker
Compare two text blocks side-by-side and highlight differences.
Find and Replace
Find and replace specific words or regular expressions in text blocks.
Lorem Ipsum
Generate placeholder Lorem Ipsum dummy text for your layouts.
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Text Repeater
Repeat any text multiple times with custom separator options.
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Number to Words
Convert any number into its full English word representation.
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Binary Converter
Convert text to binary and decode binary code to text. Instant, free.
Text to Speech
Convert text to natural spoken voice, listen online or download audio.
Speech to Text
Convert spoken voice into written text in real-time with voice typing.
JSON Formatter
Prettify, format, parse, and validate JSON data instantly.
Developer Tools
SHA-256 Hash Generator
Generate secure SHA-256 cryptographic hashes instantly.
Base64 Image Encoder
Convert any image into a Base64 encoded string for embedding in HTML/CSS.
JSON to XML Converter
Easily convert JSON objects and arrays into structured XML documents.
XML Minifier
Compress XML data by removing whitespaces and comments.
JSON Minifier
Compress JSON data into a single line to save bandwidth.
HTML Minifier
Compress and minify HTML code to reduce file size and improve load times.
CHMOD Calculator
Calculate Linux CHMOD permissions exactly using octal and symbolic values.
SHA-512 Hash Generator
Generate secure SHA-512 cryptographic hashes instantly for any text string.
MAC Address Generator
Generate random valid MAC addresses in various formats.
JSON to CSV Converter
Convert JSON arrays into valid CSV files quickly and entirely in your browser.
HTML Entity Encoder/Decoder
Encode and decode HTML entities safely for web pages and scripts.
Color Contrast Checker
Check WCAG color contrast ratios between text and background colors.
Markdown Table Generator
Create, edit, and format Markdown tables easily using a spreadsheet-like grid.
CSV to JSON Converter
Convert Comma-Separated Values (CSV) spreadsheets into JSON arrays instantly.
XML to JSON Converter
Convert XML payloads and documents into clean JSON objects instantly.
Crontab Generator
Generate Linux cron schedule expressions quickly using a simple UI.
URL Parser
Extract protocol, host, path, and query parameters from any URL instantly.
Hex to ASCII Converter
Convert Hexadecimal codes back into readable ASCII text.
Text to Base32 Converter
Encode plain readable text into a Base32 string.
Base32 to Text Converter
Decode Base32 encoded strings back into readable text.
Base64 Encode/Decode
Encode plain text to Base64 format or decode it back instantly.
URL Encode/Decode
Encode special characters in URL strings or decode them back.
HTML Encoder/Decoder
Encode characters to HTML entities or decode them back.
Password Generator
Generate strong, secure, customized random passwords instantly.
Hash Generator
Generate cryptographic SHA-256, SHA-512, or MD5 hashes instantly.
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Regex Tester
Test and debug regular expressions live with match highlighting.
Code Formatter
Format and beautify JSON, HTML, CSS, JavaScript, SQL, and XML code instantly.
CSS
CSS Minifier
Minify and beautify CSS code, see file size savings instantly.
JS
JS Minifier
Minify JavaScript code and download the compressed .min.js file.
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JWT Decoder
Decode and inspect JSON Web Token headers, payloads, and signatures.
UUID Generator
Generate high-quality secure v4 UUIDs/GUIDs in custom quantities.
XML Formatter
Format, validate, beautify, or minify XML data in real-time.
SQL Formatter
Prettify, structure, and format raw SQL query code for readability.
User Agent Parser
Parse and inspect user agent strings to extract OS, browser details.
IP Address Lookup
Look up any IP address to find location, ISP, timezone, ASN, and coordinates.
YouTube Thumbnail
Download any YouTube video thumbnail in HD, SD, and all available resolutions. Free.
IP Subnet Calculator
Calculate IP ranges, netmasks, wildcards, CIDR, and host limits.
Time to Decimal Converter
Convert standard time format (HH:MM:SS) to decimal hours and vice versa. Perfect for timesheets and payroll billing.
Days in Month Calculator
Check the exact number of days in any month for any year. Automatically verifies leap year details.
Week Number Calculator
Check the week number for any date, or find start and end dates of any week number. Includes a visual week calendar table.
Business Days Calculator
Calculate the number of business days (working days) between two dates, excluding weekends and customized holidays.
Add or Subtract Days Calculator
Calculate a future or past date by adding or subtracting days, weeks, months, or years. Option to count or exclude weekends.
Calculators
Scientific Calculator
Full scientific calculator with trig, logarithms, powers, roots, and memory functions.
百分比计算器
Four percentage calculators: X% of Y, change, increase & decrease.
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Fraction Calculator
Add, subtract, multiply and divide fractions with step-by-step working.
Square Root Calculator
Calculate square root, cube root, and nth root with step-by-step explanation.
Compound Interest
Calculate investment growth with compound interest and monthly contributions.
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Discount Calculator
Calculate sale price, coupon savings, taxes, and pricing breakdown.
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VAT Calculator
Calculate sales tax / VAT additions and removals from base values.
小费计算器
Calculate tip amount and split the bill evenly between people.
体重指数计算器
Calculate Body Mass Index and healthy weight range instantly.
Age Calculator
Calculate your exact age in years, months, days, hours, and minutes.
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Body Fat Calculator
Calculate body fat % using the US Navy method. Enter neck, waist, hip, height.
Ideal Weight
Calculate ideal body weight using Hamwi, Devine, Robinson, and Miller formulas.
Water Intake Calculator
Calculate daily water intake based on weight, activity level, and climate.
Macro Calculator
Calculate daily macros (protein, carbs, fats) based on TDEE, goal, and body stats.
Calorie Calculator
Calculate daily calorie needs based on age, weight, height, gender, and activity level.
Sleep Calculator
Calculate best bedtime or wake-up time based on 90-minute sleep cycles.
Pregnancy Calculator
Calculate due date, current week, and trimester from last menstrual period.
Date Difference
Calculate the exact difference between two dates in years, months, days, and hours.
Time Calculator
Add or subtract time values. Calculate hours and minutes between two times.
Pace Calculator
Calculate running pace, finish time, or distance. Supports miles and kilometers.
Work Hours Calculator
Calculate total hours worked from time-in/time-out entries. Weekly timesheet.
Net Worth Calculator
Calculate your total net worth from assets minus liabilities.
Budget Calculator
Build a monthly budget with income and expense categories. See surplus instantly.
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Savings Goal Calculator
Calculate how long to reach a savings goal or monthly payment needed.
Loan Amortization
Full amortization schedule for any loan: monthly payment, interest, and principal breakdown.
Daylight Saving Time Finder
Find transition dates and details for Daylight Saving Time (DST) shifts in any major country or region.
Seconds to Time Converter
Convert any quantity of seconds into a human-readable format (years, days, hours, minutes, seconds) instantly.
Julian Date Converter
Convert calendar dates to Julian Day Numbers (JDN), Modified Julian Dates (MJD), and Julian calendar dates, and vice versa.
Day of the Week Calculator
Calculate what day of the week (Monday, Sunday, etc.) any past or future date falls on, with key calendar facts.
Days Until Calculator
Calculate exact time (days, hours, minutes) remaining to any date, and generate a customized shareable countdown link.
Utility & Converters
Chinese Name Generator
Generate authentic sounding Chinese names based on historic surnames.
Chinese Mortgage Calculator
Calculate Chinese home loans using the Loan Prime Rate (LPR) system.
Red Envelope Split Simulator
Simulate WeChat's random Red Envelope (Hongbao) splitting algorithm.
WeChat Moments Formatter
Format your text perfectly for WeChat Moments, removing messy blank lines.
Simplified & Traditional Converter
Instantly convert Chinese text between Simplified (Mainland) and Traditional (Taiwan/HK).
Chinese ID Card Validator
Verify the format of a Chinese ID card and extract birth date and gender.
Chinese Pinyin Converter
Convert Chinese characters (Hanzi) into readable Pinyin with tone marks.
RMB Financial Number Converter
Convert numeric amounts into formal Chinese financial characters (人民币大写).
Credit Card Validator
Verify if a credit card number is mathematically valid using the Luhn Algorithm.
Hex to Text Converter
Decode Hexadecimal strings back into plain readable text.
Text to Hex Converter
Convert standard text strings into hexadecimal format.
Random String Generator
Generate secure random strings with custom lengths and character sets.
Morse Code Translator
Translate English text to Morse code and vice versa.
Image Aspect Ratio Calculator
Calculate aspect ratios or find exact dimensions for resizing images and videos.
Unit Converter
Convert length, weight, temperature, area, and speed units.
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Currency Converter
Convert between 170+ world currencies with live exchange rates. USD, EUR, GBP, JPY, and more.
Color Converter
Convert colors between HEX, RGB, HSL, and CMYK formats instantly.
Color Palette
Generate complementary, triadic, and monochromatic color schemes.
QR Code Generator
Generate high-quality custom QR codes for links, text, or emails.
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Markdown to HTML
Convert Markdown rich text format to standard clean HTML code.
Morse Code Converter
Translate plain text to Morse code and play signal audio tones.
Aspect Ratio Calculator
Calculate aspect ratios and scale dimensions while maintaining ratio.
Random Number
Generate random numbers in any range with unique or duplicate options.
Fake Address Generator
Generate realistic fake addresses for the US, UK, Canada, and 10+ countries.
Afghan Date Converter
Convert dates between Shamsi, Miladi, and Hijri calendars easily.
Games & Fun
Random Group Generator
Divide a list of names into random, equally sized teams or groups instantly.
Cat Age Calculator
Convert your cat's age into human years using accurate veterinary charts.
Dog Age Calculator
Calculate your dog's true age in human years based on its breed size and age.
Zodiac Sign Calculator
Find out your astrological zodiac sign instantly by entering your date of birth.
Roman Numeral Date Converter
Convert birthdays, anniversaries, and other special dates into Roman numerals instantly for tattoos or designs.
Gematria Calculator
Calculate the Gematria value of any English text using Simple, Pythagorean, and Jewish gematria ciphers.
Wheel Spinner
Customizable spinning wheel for random decisions. Add your own options, spin to pick a winner.
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Coin Flip
Flip a virtual coin with animated flip. Track streaks and full flip history.
Dice Roller
Roll any number of dice: D4, D6, D8, D10, D12, D20, D100. See totals and history.
Snooker Scoreboard
Live snooker frame & break tracker. Break builder, foul handling, snookers needed. Best possible.
Countdown Timer
Countdown to any date and time with visual ring. Includes stopwatch with lap tracking.
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Love Calculator
Fun love compatibility calculator. Enter two names to get a love percentage score.
Secret Santa Picker
Randomly assign Secret Santa gift givers and receivers. Works for any group size.
Wordle Solver
Enter your Wordle guesses and get possible answers based on correct and wrong letters.
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Age in Fun Units
Find out your age in heartbeats, breaths, seconds, moon orbits, and more fun units.
Personality Quiz
Fun personality quiz to discover which type you are. Instant results, no sign-up needed.
Random Name Generator
Generate random first and last names for US, UK, Spanish, French and more locales.
SEO Tools
Baidu SERP Snippet Preview Tool
Simulate how your meta title and description will look on Baidu search results.
Keyword Density Checker
Analyze text to calculate the frequency and density of keywords.
Twitter Card Generator
Generate Twitter Card meta tags to display rich previews on X (Twitter).
CPM Calculator (Cost Per Mille)
Calculate the Cost Per Mille (cost per 1,000 impressions) for advertising.
CPC Calculator (Cost Per Click)
Calculate the Cost Per Click (CPC) for your advertising campaigns.
Meta Tag Generator
Generate SEO-optimized meta titles, descriptions, and robots tags.
Keyword Density
Analyze the frequency and weight of keywords in your text.
Slug Generator
Convert any title or phrase into a clean, SEO-friendly URL slug.
robots.txt Generator
Generate a standard robots.txt file to guide search engine crawlers.
Open Graph Generator
Generate rich meta tags for beautiful social media link previews.
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Readability Score
Check Flesch Reading Ease, Flesch-Kincaid Grade, and Gunning Fog Index for any text.
Afghan Tools
Afghan Saffron Price Calculator
Calculate the value of Afghan saffron by gram, mithqal, and kilogram based on live or custom market rates.
Prayer Times
Accurate Namaz times for Kabul, Kandahar, Herat, Mazar and all Afghan cities.
Zakat Calculator
Calculate your Zakat on gold, silver, cash and business assets accurately.
Tasbeeh Counter تسبیح
Digital tasbih counter with preset dhikr, vibration, sound and session history.
Hijri Calendar
Monthly Islamic calendar with Shamsi and Gregorian dates and Islamic holidays.
Persian Calendar
Persian (Shamsi/Jalali) calendar with corresponding Gregorian and Islamic dates.
Miladi Calendar
Miladi (Gregorian) calendar with corresponding Persian (Shamsi) and Islamic Hijri dates.
Afghan Calendar to Gregorian
Convert Afghan Shamsi (Solar Hijri) dates to Gregorian (Miladi) and back. Hamal to Hut months, with weekday.
Ramadan Sehri & Iftar
Full Ramadan Sehri and Iftar schedule for all Afghan cities with countdown timer.
Nowruz Countdown
Countdown timer to Afghan New Year (Nawroz) with Shamsi, Miladi and Hijri dates.
Dari & Pashto Counter
Count words and characters in Dari (دری) and Pashto (پښتو) RTL text.
Afghan Phone Formatter
Format Afghan phone numbers and detect carrier: Roshan, MTN, Etisalat, AWCC.
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AFN 货币转换器
Convert Afghan Afghani to USD, EUR, PKR, IRR, SAR and more with live rates.
Gold Price in AFN
Today's gold price in Afghan Afghani. Calculate by gram, tola, mithqal at any purity.
Afghan Salary Calculator
Calculate take-home salary after Afghan income tax for government and private employees.
USA Tools
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Mortgage Calculator
Calculate monthly mortgage payment, total interest, and full amortization for any US home loan.
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Paycheck Calculator
Calculate US net take-home pay after federal, state, FICA taxes. Supports all 50 states.
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Sales Tax Calculator
Calculate sales tax for all 50 US states with combined state + county rates instantly.
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Car Loan Calculator
Calculate monthly car payment and total interest. Includes sales tax, trade-in, and amortization.
Student Loan Calculator
Calculate monthly student loan payments, total interest, and payoff timeline for federal loans.
Credit Card Payoff
Calculate how long it takes to pay off a credit card balance and total interest paid.
Retirement Calculator
Calculate how much you need to save for retirement based on age, income, and goals.
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Invoice Generator
Create professional invoices free. Add line items, tax, notes. Print to PDF instantly.
Fuel Cost Calculator
Calculate gas cost for any road trip. Enter distance, MPG, and gas price. Compare vehicles.
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GPA Calculator
Calculate semester and cumulative GPA using the 4.0 scale. Add courses with letter grade.
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Grade Calculator
Calculate final grade needed, weighted course grades, and letter grade from percentage.
Typing Speed Test
Test your typing speed in WPM and accuracy with random passages. Improve your score.
Time Zone Converter
Convert time between all world time zones. See ET, CT, MT, PT live side by side.
World Clock Meeting Planner
Compare global working hours and find the perfect overlap window for scheduling meetings.
Pomodoro Timer
25-minute focus timer with breaks, task list, and session counter. Works offline.
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Roman Numeral Converter
Convert numbers to Roman numerals and vice versa. Supports 1–3999 with breakdown.
Password Strength Checker
Check password strength in real time. See entropy, crack time estimate, and tips.
Singapore Tools
Singapore Property Tax Calculator
Calculate Singapore property tax based on Annual Value (AV) for both owner-occupied and non-owner-occupied properties using 2024 IRAS rates.
GST 9% S$
GST Calculator
Calculate 9% GST for Singapore. Add or remove GST from any price instantly.
CPF
CPF Calculator
Calculate CPF contributions for employer and employee by age group and residency status.
IRAS
Singapore Income Tax
Calculate personal income tax based on IRAS 2024 tax brackets ranging from 0% to 22%.
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Take-Home Pay Calculator
Calculate your net take-home pay after CPF and income tax deductions in Singapore.
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HDB Loan Calculator
Calculate monthly HDB loan repayments, total interest and CPF OA usage for flat purchase.
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Stamp Duty Calculator
Calculate BSD and ABSD for Singapore property purchase. Includes 2023/2024 ABSD rates.
NRIC Validator
Validate Singapore NRIC/FIN numbers using the official checksum algorithm for S, T, F, G, M.
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COE Calculator
Calculate total cost of owning a car in Singapore including COE, ARF, and OMV breakdown.
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Rental Yield Calculator
Calculate gross and net rental yield for Singapore properties. Includes property tax and costs.
Salary Benchmark
Compare your salary to Singapore industry median ranges across 15 industries and 6 job levels.
Pakistan Tools
PTA Mobile Tax Calculator (Pakistan)
Calculate estimated Pakistan PTA mobile phone registration tax based on phone value in USD.
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Income Tax Calculator
FBR 2024-25 salary tax slabs. Annual tax, monthly deduction, and effective tax rate for salaried persons.
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Salary Calculator
Monthly take-home pay after income tax and EOBI. Full salary slip breakdown for any gross salary.
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PKR Currency Converter
Convert Pakistani Rupee to USD, AED, SAR, GBP, EUR, CNY, OMR, and CAD with 2024 reference rates.
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Gold Price in PKR
Calculate gold value in Pakistani Rupee for tola, gram, masha, and ratti. Supports 24K, 22K, 21K, 18K.
Electricity Bill Calculator
Calculate WAPDA/DISCO bill from units consumed. Shows NEPRA slabs, 17% GST, and all surcharges.
Zakat Calculator
Calculate Zakat on gold, cash, and business assets. 2024-25 nisab threshold. Shariah-compliant.
Car Loan Calculator
Monthly EMI and total markup for car loans from any Pakistani bank. Supports all tenures and rates.
Home Loan (PMHP)
Mera Pakistan Mera Ghar home loan calculator. Monthly installment at 5%–22% markup, up to 20 years.
Gratuity Calculator
End-of-service gratuity for private sector employees. Shows taxable and tax-free portions by FBR rules.
EOBI Calculator
EOBI monthly contributions: employee 1% + employer 5% of minimum wage. Annual totals included.
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GST Calculator (17%)
Add or remove 17% Pakistan GST. Also supports Sindh PST (13%) and Punjab PST (16%).
IT Freelancer Tax
0.25% final tax on foreign IT/ITES remittances. Converts USD, GBP, AED, EUR to PKR and computes tax.
Pension Calculator
Government civil servant pension: LQS/60 × basic pay formula. Shows monthly pension and commutation.
GP Fund Calculator
GP Fund monthly contribution and projected balance at 12% profit per annum over any service period.
Prize Bond Calculator
Pakistan National Savings prize bond denominations PKR 100–40,000 with prize amounts and draw frequency.
Customs Duty Calculator
Import customs duty, 17% sales tax, ACD, and WHT for commercial and industrial importers in Pakistan.
Inflation Calculator
Pakistan CPI inflation 2010–2024. Calculate purchasing power change using official PBS inflation data.
Karachi Property Prices
Average 2024 property prices per sq yard: DHA, Clifton, Gulshan, North Nazimabad, Bahria Town, PECHS.
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Withholding Tax (WHT)
WHT calculator for contracts, supplies, services, rent, dividends, and imports. Filer vs non-filer rates.
CGT
Property Gain Tax (CGT)
FBR capital gains tax on property sale: 15% (under 1 year) down to 0% (after 6 years). Includes 3% WHT.
Turkey Tools
Turkey KDV Tevkifat Calculator
Calculate Turkish KDV Tevkifat (VAT Withholding) amounts. Apply 1/10 to 10/10 tevkifat rates on KDV easily for Turkish invoices.
KDV 20% ₺
KDV Calculator
Calculate Turkish VAT (KDV) at 20%, 10%, or 1%. Add or remove KDV from any price.
GELİR
Turkey Income Tax
Calculate gelir vergisi (income tax) using 2024 Turkish progressive brackets from 15% to 40%.
22,104₺
Asgari Ücret Calculator
2025 minimum wage: 22,104 TL gross. See net after SGK, income tax, and employer cost.
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Kredi Hesaplama
Calculate monthly Turkish bank loan payments, total interest, and full amortization in TL.
₺ $
TRY Currency Converter
Convert Turkish Lira to USD, EUR, GBP, SAR, AED, CHF, and JPY with indicative rates.
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Tapu Fee Calculator
Calculate Turkish title deed (tapu harcı) fees — 4% of property value plus döner sermaye.
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Kıdem Tazminatı
Calculate Turkish severance pay based on salary and years of service. 2024 ceiling applied.
TÜFE Inflation Calculator
Calculate Turkish inflation impact using CPI data 2010–2024, including the 72% year 2022.
Istanbul Rent Index
Average 2024 rent prices across 10 Istanbul districts for 1+1, 2+1, and 3+1 apartments.
EMEKLİ
Emeklilik Yaşı Calculator
Calculate Turkish retirement age and date based on birth year, gender, and SGK premium days.
Math & Number Tools
Fapiao & VAT Tax Calculator
Calculate the pre-tax and tax amounts for Chinese Fapiao (Invoices) based on VAT rates.
Chinese Discount Calculator (Zhe 折)
Convert Chinese discount formats (like 8折) into standard percentage off.
Chinese Mu Area Converter
Convert traditional Chinese Land Area (Mu / 亩) to Square Meters and Acres.
Jin Weight Converter (斤 to KG/Lbs)
Convert Chinese Jin (斤) and Liang (两) to Kilograms and Pounds.
Area Converter
Convert land and surface area between Acres, Hectares, Square Meters, and Square Feet.
Energy Converter
Convert energy values between Joules, Calories, Kilocalories (kcal), and BTUs.
Speed Converter
Convert speed units between Miles per Hour (mph), Kilometers per Hour (km/h), and Knots.
Volume Converter
Convert liquid volumes between Gallons, Liters, Pints, Cups, and Ounces.
Weight Converter
Convert body weight between Pounds (lbs), Kilograms (kg), and Stones (st).
Height Converter (Feet to CM)
Convert human height from feet and inches to centimeters and meters instantly.
Celsius to Fahrenheit Converter
Quickly convert temperatures between Celsius (°C) and Fahrenheit (°F).
Miles to Kilometers Converter
Convert miles to kilometers (mi to km) and vice-versa instantly.
Lease Mileage Calculator
Calculate if you are over or under your car lease mileage limit.
Square Footage Calculator
Calculate the area in square feet based on length and width measurements.
Half-Life Calculator
Calculate the half-life of a radioactive isotope or substance over time.
Quarterly Earnings Calculator
Convert your monthly or annual salary into equivalent quarterly earnings (3 months).
Gold Karat Purity Calculator
Convert gold Karats (K) to purity percentage and fineness (parts per thousand).
Tip Splitter & Calculator
Calculate the tip amount and easily split the total restaurant bill among friends.
Margin & Markup Calculator
Calculate profit margin, markup percentage, and gross profit based on cost and revenue.
Electricity Cost Calculator
Calculate the electricity consumption and running cost of your home appliances over a day, month, and year.
Fraction to Decimal Converter
Quickly convert any fraction into a decimal number. Includes support for mixed numbers and repeating decimals.
Leap Year Checker
Instantly check if a specific year is a leap year (366 days) and find the next leap years.
Matrix Calculator
Add, subtract, multiply 2×2 and 3×3 matrices. Compute determinant, inverse, and transpose instantly.
Statistics Calculator
Calculate mean, median, mode, standard deviation, variance, range, quartiles from any dataset.
Hex / Binary Converter
Convert instantly between hexadecimal, binary, decimal, and octal. Real-time, all-in-one converter.
Prime Number Checker
Check if any number is prime, get prime factorization, find all divisors, and list first N primes.
LCM & GCD Calculator
Find the Least Common Multiple and Greatest Common Divisor of two or more integers.
Quadratic Solver
Solve ax²+bx+c=0 for real and complex roots with discriminant and vertex coordinates.
Number Base Converter
Convert numbers between any base from 2 (binary) to 36 (includes hex, octal, decimal).
Ratio Calculator
Simplify ratios and solve proportions (A/B = C/?). Fast, clean, and browser-based.
CSS Design Tools
CSS Gradient Generator
Create linear, radial, and conic CSS gradients with live preview and one-click code copy.
Box Shadow Generator
Build custom CSS box-shadows visually with sliders for offset, blur, spread, color, and inset.
Border Radius Generator
Design custom CSS border-radius shapes by controlling each corner independently with live preview.
Color Contrast Checker
Check WCAG AA/AAA compliance for any foreground/background color pair. Essential for accessibility.
Image Color Picker
Upload any image and click to extract HEX/RGB color values from any pixel.
Writing & Content
Character Counter
Count chars/words/lines with progress bars for Twitter (280), SMS (160), Instagram & more.
Word Frequency Analyzer
See the top words in any text with bar charts. Useful for keyword research and content review.
Text Summarizer
Auto-extract the most important sentences from any long article or document. 100% browser-based.
Emoji Picker
Browse, search, and copy any emoji instantly by name or category.
Finance Calculators
Stripe Fee Calculator
Calculate Stripe payment processing fees to find out your net revenue.
PayPal Fee Calculator
Calculate PayPal transaction fees for sending or receiving money.
Rule of 72 Calculator
Estimate how long it takes for an investment to double at a given annual return rate.
Profit Margin Calculator
Calculate gross profit margin %, markup %, and total profit from cost and selling price.
Break-Even Calculator
Find break-even units and revenue from fixed costs, selling price, and variable cost per unit.
EMI Calculator
Calculate Equated Monthly Installment, total interest, and total repayment for any loan.
Fixed Deposit Calculator
Compute FD maturity amount with monthly/quarterly/annual compounding at any interest rate.
Gold Price Calculator
Calculate gold value in USD by weight (grams, oz, kg, tola) and karat purity.
Loan vs Savings
Compare buying on credit vs saving first. Discover how much interest you save by waiting.
Tip & Bill Splitter
Split a restaurant bill and tip evenly among any group. Shows per-person share instantly.
Meeting Cost Calculator
Calculate the real dollar cost of any meeting from hourly rate, attendees, and duration.
Health & Fitness
Heart Rate Zones
Get your 5 cardio training zones from age or max heart rate using the Karvonen formula.
Protein Intake Calculator
Find your daily protein target based on weight, activity level, and fitness goal.
Waist-to-Hip Ratio
Calculate WHR and assess cardiovascular health risk using WHO guidelines.
Developer Tools
Data Storage Converter
Convert digital storage sizes between Bytes, Kilobytes (KB), Megabytes (MB), Gigabytes (GB), and Terabytes (TB).
Hex to RGB Converter
Convert Hex color codes to RGB and RGBA instantly for CSS styles.
Pixels to REM Converter
Convert Pixels (px) to REM based on the root font size for responsive CSS web design.
Cron Expression Parser
Parse any cron expression into plain English with next 10 run times. Supports all 5-field cron syntax.
DNS Lookup
Look up A, AAAA, MX, TXT, CNAME, NS records for any domain via Google DNS-over-HTTPS.
Games & Fun
Rock Paper Scissors
Play rock, paper, scissors against the computer. First to 5 wins the match!
Number Guessing Game
Guess the secret number (1–100) in 10 tries. Get hot/cold hints after each guess.
Hangman Game
Play browser hangman across animals, countries, tech, and food word categories.
Utility & Converters
Stopwatch
High-precision stopwatch with lap tracking. View lap-time table. Works entirely offline.
File Size Converter
Convert between bytes, KB, MB, GB, TB, and PB instantly.
Temperature Converter
Convert Celsius, Fahrenheit, Kelvin, and Rankine. Type in any field for real-time conversion.
To-Do List
A persistent browser to-do list with priority levels, filters, and LocalStorage saving.
Data & Conversion
JSON to CSV
Convert JSON arrays to CSV format instantly. Download or copy. Handles nested objects.
CSV to JSON
Parse CSV data to JSON. Auto-detect headers, custom delimiter, pretty-print output.
Duplicate Line Remover
Remove duplicate lines from text or code. Sort, trim whitespace, count removed lines.
Whitespace Remover
Remove extra spaces, trim lines, and clean pasted text or code content instantly.
Markdown Live Preview
Live Markdown editor with real-time HTML preview. Supports tables, code blocks, and links.
Security & Privacy
Text Encryption
Encrypt and decrypt messages with AES-256 in your browser. 100% private, keys never leave device.
Color Blindness Simulator
Simulate Protanopia, Deuteranopia, Tritanopia on any uploaded image. Accessibility testing tool.
Developer Reference
HTTP Status Codes
Complete reference for 70+ HTTP codes (1xx–5xx) with descriptions, use cases, and SEO impact.
API Tester
Test REST APIs in browser. Send GET/POST/PUT/DELETE with headers, auth, and JSON body.
HTTP Header Checker
Inspect HTTP response headers, security headers (HSTS, CSP), caching, and SEO headers.
SSL Certificate Checker
Verify SSL/TLS certificate validity, grade, expiry date, and HTTPS security details.
Favicon Generator
Create website favicons from text or emoji. Download ICO, PNG, Apple Touch in all sizes.
SEO & Content Optimization
UTM Link Builder
Build UTM-tagged URLs for Google Analytics. Set source, medium, campaign, term, and content.
Schema Markup Generator
Generate JSON-LD structured data for LocalBusiness, FAQ, Article, Product, and more.
Title Tag Analyzer
Preview and analyze your page title and meta description as a live Google search result.
Readability Improver
Analyze Flesch-Kincaid, Dale-Chall, Gunning Fog scores and get improvement suggestions.
Canonical URL Checker
Detect missing, self-referential, or cross-page canonical tags. Paste HTML for offline check.
Design & Media
Traditional Chinese Colors Picker
Explore and copy beautiful, historic traditional Chinese colors.
HEX to HSL Converter
Convert HEX color codes to HSL (Hue, Saturation, Lightness).
CMYK to RGB Converter
Convert CMYK printing colors back to RGB digital screen colors.
RGB to CMYK Converter
Convert RGB screen colors to CMYK printing colors.
CSS Triangle Generator
Generate pure CSS triangles for tooltips, pointers, and dropdown arrows.
Image EXIF Viewer
Extract EXIF metadata from JPEG photos: camera, GPS, shutter speed, ISO. Runs in browser.
Google Font Pairing
Discover curated Google Font pairs. Preview with custom text and copy CSS import code.
Social Media Image Sizes
2025 image dimension guide for Instagram, Facebook, X/Twitter, LinkedIn, YouTube, TikTok.
CSS Flexbox Generator
Build Flexbox layouts visually. Set direction, justify, align, gap. Copy production CSS.
CSS Grid Generator
Design CSS Grid layouts with column/row/gap controls and preset layouts (sidebar, holy grail).
CSS Animation Generator
Create CSS @keyframe animations (fade, slide, bounce, spin) with live preview. Copy CSS.
Finance & Tax
US Tax Bracket Calculator
Calculate 2025 US federal income tax by bracket. Shows marginal and effective rate. All filing statuses.
Investment Return Calculator
Calculate compound investment growth with contributions. Year-by-year projections, inflation-adjusted.
Debt Payoff Calculator
Compare Avalanche vs Snowball debt strategies. See total interest saved and payoff progress.
Music & Miscellaneous
Korean / Traditional Age Calculator
Calculate your traditional East Asian age (used historically in Korea and China).
Beijing Time Converter (CST)
Convert current local time to China Standard Time (Beijing Time) instantly.
Chinese Zodiac Calculator
Find out your Chinese Zodiac animal sign based on your birth year.
BPM Tap Tempo
Tap to the beat to calculate BPM. Includes metronome and delay time calculator for DAWs.
Chronological Age Calculator
Exact age in years, months, days, hours, plus zodiac sign, birth weekday, and 10K-day milestone.
AI Token Counter
Count tokens for GPT-4o, Claude 3, Gemini. Estimate API costs and check context window usage.
More Tools
Remove Extra Spaces
Remove extra spaces, tabs and blank lines from text. Collapse multiple spaces into one instantly.
Text Reverser
Reverse any text backwards instantly. Flip characters of a string in one click. Free and private.
Reverse Word Order
Reverse the order of words in a sentence. Flip word order instantly while keeping each word intact.
Text Line Sorter
Sort lines of text alphabetically (A-Z or Z-A). Order any list instantly. Free online line sorter.
Vowel and Consonant Counter
Count vowels, consonants, letters and words in your text instantly. Free online vowel counter.
Palindrome Checker
Check if a word, phrase or number is a palindrome. Instantly test if text reads the same backwards.
Upside Down Text Generator
Flip text upside down to create uʍop ǝpısdn text for social media bios and messages. Free and instant.
Bold Text Generator
Generate bold Unicode text for Instagram, Facebook and Twitter where formatting is not allowed. Free.
Italic Text Generator
Create italic Unicode text to copy and paste into social media bios and posts. Free italic font generator.
Strikethrough Text Generator
Add a line through your text with this strikethrough generator. Copy crossed-out text anywhere. Free.
Small Caps Generator
Convert text to ꜱᴍᴀʟʟ ᴄᴀᴘꜱ Unicode letters for stylish bios and posts. Free small caps text generator.
Pig Latin Translator
Translate English to Pig Latin instantly. Fun Pig Latin generator for words and sentences. Free online.
NATO Phonetic Alphabet Converter
Convert text to the NATO phonetic alphabet (Alpha, Bravo, Charlie). Spell words clearly over the phone.
Remove Duplicate Words
Remove repeated words from text while keeping the first occurrence. Free duplicate word remover online.
Random Word Generator
Generate random English words for games, brainstorming and writing prompts. Free random word generator.
Average Calculator
Calculate the average (mean), sum and count of any list of numbers instantly. Free average calculator.
Factorial Calculator
Calculate the factorial (n!) of any number instantly. Free online factorial calculator with big numbers.
Fibonacci Sequence Generator
Generate the Fibonacci sequence up to any number of terms instantly. Free Fibonacci generator online.
Odd or Even Checker
Check instantly whether a number is odd or even. Free online odd even number checker for any integer.
Number Sorter
Sort numbers in ascending or descending order instantly. Free online number sorter for any list.
Exponent Calculator
Calculate powers and exponents (base to the power of n) instantly. Free online exponent calculator.
Modulo Calculator
Calculate the remainder of a division (modulo) instantly. Free online mod calculator for any numbers.
Random PIN Generator
Generate secure random PIN codes of any length (4, 6 digits and more). Free random PIN generator online.
Percentage Change Calculator
Calculate the percentage increase or decrease between two numbers instantly. Free percent change tool.
Rounding Calculator
Round numbers to decimal places, nearest ten, hundred or whole number instantly. Free rounding tool.
Scientific Notation Converter
Convert numbers to and from scientific notation (e.g. 1.5 x 10^3) instantly. Free online converter.
Prime Factorization Calculator
Find the prime factors of any number instantly. Free prime factorization calculator with full breakdown.
CM to Inches Converter
Convert centimeters to inches instantly. Free cm to in length converter with accurate results.
Inches to CM Converter
Convert inches to centimeters instantly. Free in to cm length converter with accurate results.
KG to Pounds Converter
Convert kilograms to pounds (lbs) instantly. Free kg to lb weight converter with accurate results.
Pounds to KG Converter
Convert pounds (lbs) to kilograms instantly. Free lb to kg weight converter with accurate results.
MPH to KM/H Converter
Convert miles per hour to kilometers per hour instantly. Free mph to kmh speed converter.
KM to Miles Converter
Convert kilometers to miles instantly. Free km to mi distance converter with accurate results.
Liters to Gallons Converter
Convert liters to US gallons instantly. Free liters to gallon volume converter with accurate results.
Feet to Meters Converter
Convert feet to meters instantly. Free ft to m length converter with accurate, precise results.
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and back instantly. Free epoch time converter online.
Milliseconds to Time Converter
Convert milliseconds to seconds, minutes, hours, days and back. Free milliseconds time converter online.
Random Hex Color Generator
Generate random hex color codes with live preview. Free random color generator for designers and devs.
CSS Clamp Generator
Generate responsive CSS clamp() values for fluid typography and spacing. Free clamp() calculator online.
Meta Viewport Generator
Generate the responsive meta viewport tag for mobile-friendly websites. Free viewport tag generator.
HTML to Markdown Converter
Convert basic HTML to clean Markdown instantly. Free HTML to Markdown converter for headings, links, lists.
JSON String Escaper
Escape and unescape strings for JSON safely. Free online JSON escape and unescape tool for developers.
Simple Interest Calculator
Calculate simple interest and total amount from principal, rate and time. Free simple interest calculator.
ROI Calculator
Calculate return on investment (ROI) percentage and net profit instantly. Free ROI calculator online.
Markup Calculator
Calculate selling price, markup percentage and profit from cost. Free markup calculator for businesses.
Salary to Hourly Calculator
Convert annual salary to hourly wage instantly. Free salary to hourly pay calculator with custom hours.
Magic 8 Ball
Ask the Magic 8 Ball a yes or no question and get a fun fortune answer. Free online Magic 8 Ball.
Yes or No Generator
Get a random Yes or No answer to help make quick decisions. Free yes no wheel decision maker online.
Random Quote Generator
Get a random inspirational quote each click for motivation and social posts. Free quote generator online.
Bingo Number Generator
Generate random bingo numbers (1-75) without repeats for game night. Free online bingo number caller.
Football & Soccer Tools
Football Betting Odds Converter
Convert football betting odds between decimal, fractional and American formats and see the implied win probability.
Football Per 90 Stats Calculator
Turn any football stat into a per-90-minutes rate to compare players who played different amounts of time.
Football League Table Generator
Paste your match results and instantly build a sorted league table with points, goal difference, wins, draws and losses.
Football Formation Builder
Pick a formation, add your players, and see your line-up arranged on a football pitch instantly.
Random Football Team Generator
Paste your players and instantly split them into shuffled, balanced teams for a kickabout or five-a-side.
Penalty Shootout Simulator
Simulate a realistic football penalty shootout - best of five kicks, then sudden death until there is a winner.
Expected Goals (xG) Calculator
Estimate the expected goals (xG) value of a shot from distance, angle and situation, and total xG for a match.
Football Pitch Size Converter
Convert pitch length and width between yards and metres, get the area, and compare to FIFA standard sizes.
Football Score Predictor
Enter each team's expected goals and get the most likely scoreline plus win, draw and loss probabilities.
Football Pass Accuracy & Possession Calculator
Work out pass completion percentage and possession share for a team or player in seconds.
HTML to JSX Converter
Convert standard HTML code into clean, valid React JSX syntax instantly.
JSON to YAML Converter
Convert structural JSON data into clean, readable YAML configuration formatting instantly.
YAML to JSON Converter
Convert YAML configuration documents into valid, parsed JSON syntax instantly.
Base64 File Converter
Encode any file type into a Base64 data string, or decode Base64 data back to downloadable files.
JSON Schema Validator
Validate JSON structures against standard JSON Schemas to detect structural and typing errors.
CSS to Tailwind Converter
Parse and convert traditional CSS style declarations into equivalent Tailwind utility classes.
Regex Text Extractor
Extract specific keywords, values, or matched groups from large text using custom Regular Expressions.
User Agent Generator
Generate common, valid browser User-Agent strings for web scraping, bot emulation, and client headers testing.
JSON to Markdown Table Converter
Parse arrays of JSON objects into structured Markdown syntax tables instantly.
Markdown Table to JSON Converter
Convert standard Markdown tabular syntax back into structures of JSON objects.
Decimal to Fraction Converter
Convert any decimal value into an exact simplified fraction and mixed number.
Simple vs Compound Interest Comparison
Evaluate and compare simple interest vs compound growth returns side-by-side.
Loan Comparison Calculator
Compare multiple loan rates, durations, and terms side-by-side to find the lowest monthly cost.
Global Inflation Calculator
Calculate the purchasing power change of money over time using average inflation indexes.
Declining Balance Depreciation
Calculate asset value reduction over time using declining balance depreciation rules.
Compound Annual Growth Rate (CAGR) Calculator
Calculate the compound annual growth rate of your business and investments over time.
Salary Paycheck Slabs Hours Calculator
Calculate your gross paycheck earnings based on regular hours, overtime multipliers, and irregular shifts.
Broken Link Checker
Parse HTML markup blocks to identify invalid, broken, or protocol-less links.
Anchor Text Generator
Generate valid copyable HTML anchor elements for campaigns and internal page linking.
Keyword Extractor
Extract and analyze high-frequency keywords and density metrics from copy-pasted text.
Redirect Header & Security Checker
Analyze raw HTTP headers to inspect redirects, status codes, and security header configurations.
Waist-to-Height Ratio Calculator
Calculate your waist-to-height ratio (WHtR) to assess cardiovascular health risk and body composition.
Basal Metabolic Rate (BMR) Calculator
Calculate your Basal Metabolic Rate (BMR) to estimate daily energy needs based on Harris-Benedict formulas.
Body Adiposity Index (BAI) Calculator
Calculate body fat percentage based on hip circumference and height, without calipers or weight scales.
Passphrase Generator
Generate highly secure, memorable, and randomized passphrases using customizable dictionary word lists.
Text Scrambler & Shuffler
Scramble letters inside words or randomize line sorting in a single click.
Letter to Number Converter
Convert alphabetic letters to their corresponding numeric positions, or decode numbers back to words.
IPv6 Subnet Calculator
Calculate IPv6 address ranges, subnets, total address capacities, and binary notations.
SQL Query Explainer
Parse and explain SQL SELECT statements to break down query logic, joins, filters, and groups.
BPM Tap Tempo
Estimate the beats per minute (BPM) of any song or rhythm interactively by tapping along.
SQL to JSON Converter
Convert SQL INSERT statements into clean JSON array structures.
JSON Diff Checker
Compare two JSON objects side-by-side to highlight additions, modifications, and removals.
User Cohort Retention Calculator
Calculate user cohort retention rates and visualize them in a heatmap grid.
Customer Lifetime Value (LTV) Calculator
Calculate the total financial value a customer brings to your business over their lifespan.
Churn Rate Calculator
Calculate the rate at which customers cancel subscriptions or stop buying from you.
Customer Acquisition Cost (CAC) Calculator
Calculate the total sales and marketing spend needed to acquire a single customer.
Ad Spend & ROI Calculator (ROAS)
Calculate Return on Ad Spend (ROAS) and Return on Investment (ROI) for digital marketing campaigns.
Net Promoter Score (NPS) Calculator
Group survey ratings into Detractors, Passives, and Promoters to compute your Net Promoter Score.
Percentage Off Calculator
Calculate final prices after applying discount percentages and sales taxes.
Timesheet Calculator
Log daily check-ins, check-outs, and break durations to calculate total weekly working hours.
Age Milestone Calculator
Calculate exact dates and remaining days for major lifespans and age milestones.
CSV to HTML Table Converter
Convert standard comma-separated CSV rows into beautiful copyable HTML tables.
UUID v7 Generator
Generate time-ordered, database-friendly UUID v7 strings in bulk.
Base64 URL Safe Encoder & Decoder
Encode or decode strings using URL-safe Base64 conventions (RFC 4648).
HTML Table to Markdown Converter
Convert complex HTML table tag blocks into clean, structured Markdown table syntax.
CSS Glassmorphism Generator
Generate CSS parameters for sleek, modern glass-like UI overlays with real-time preview options.
CSS Neumorphism Generator
Design soft, extruded user interface container cards using Neumorphic CSS properties.
URL Query Parameter Builder
Interactively build complete web URLs with encoded query parameters and keys.
ASCII Art Generator
Convert standard text strings into stylized, retro-themed ASCII banner arts.
htaccess Redirect Generator
Generate redirect rules and security configurations for Apache .htaccess configuration files.
One-Rep Max (1RM) Calculator
Estimate your maximum lifting capacity (1RM) based on weight lifted and repetitions.
Wilks Coefficient Calculator
Calculate your Wilks score to compare powerlifting relative strength levels across different weight classes.
IPF Points Calculator
Calculate your IPF points to measure relative strength using International Powerlifting Federation formulas.
Lean Body Mass (LBM) Calculator
Calculate your Lean Body Mass (LBM) or fat-free mass using standard clinical formulas.
Workout Volume Calculator
Calculate total training workload volume (Sets x Reps x Weight) to monitor progressive overload.
Warm-up Set Calculator
Calculate optimal weight and repetition structures for lifting warm-up sets.
Barbell Plate Load Calculator
Calculate exactly which weight plates to load on each side of your barbell to hit target lifting weights.
Fat-Free Mass Index (FFMI) Calculator
Calculate your Fat-Free Mass Index (FFMI) to assess muscular potential and genetic limits.
Strength Standards Calculator
Compare your Bench Press, Squat, and Deadlift maximums to average athletic strength brackets.
RPE Load Chart Calculator
Calculate target lifting weights based on RPE (Rate of Perceived Exertion) and reps.
Grip Strength Health Rating Calculator
Evaluate your grip strength metrics to assess overall muscle health and longevity indices.
Target Heart Rate (Karvonen) Calculator
Calculate your target heart rate zones for workouts using the Karvonen formula based on resting heart rate.
VO2 Max Estimator
Estimate your aerobic capacity and maximal oxygen uptake (VO2 Max) using standard walking or running tests.
Army Physical Fitness Test (APFT) Score Calculator
Calculate your APFT scores for push-ups, sit-ups, and the 2-mile run based on the official US Army standard.
Max Aerobic Heart Rate (MAF / 180 Formula) Calculator
Calculate your maximum aerobic training heart rate threshold using Phil Maffetone's 180 formula.
Marathon Pace & Split Calculator
Generate pacing split times for 5K, 10K, half-marathons, and full marathons based on your target finish time.
Running Cadence (SPM) Calculator
Calculate your running cadence in Steps Per Minute (SPM) and find your optimal strides for running efficiency.
Swimming Pace (CSS) Calculator
Calculate your Critical Swim Speed (CSS) and determine threshold training paces based on 400m and 100m tests.
Cycling Power-to-Weight Ratio Calculator
Calculate your cycling power-to-weight ratio in Watts per Kilogram (W/kg) based on your FTP and weight.
Heart Rate Zone (LTHR) Calculator
Calculate your individual training heart rate zones using the Lactate Threshold Heart Rate (LTHR) method.
Heart Rate Recovery (HRR) Calculator
Measure your cardiovascular health and heart rate recovery speed after intense physical exercise.
Tapering Planner for Athletes
Calculate your training volume reductions leading up to race day to maximize recovery and performance.
Creatine Intake Calculator
Calculate your optimal daily creatine dosage for loading and maintenance phases based on body weight.
Macro Nutrient Split Generator
Divide your total daily calorie target into custom protein, carbohydrate, and fat gram ratios.
Keto Macronutrient Calculator
Calculate exact fat, protein, and strict net carbohydrate limits for a ketogenic low-carb diet.
Healthy Weight Gain Planner
Plan your muscle building journey by generating structured daily caloric surpluses and safe timelines.
Protein Powder Cost-per-Gram Utility
Compare the absolute cost per gram of pure protein across different supplement brands and container sizes.
Daily Fiber Intake Calculator
Determine your target daily dietary fiber requirements based on your age, gender, and calorie intake.
Sodium Hydration Replacement Calculator
Estimate electrolyte and sodium replenishment needs based on workout sweat loss and sweat rate.
Carbo-Loading Planner
Plan your optimal carbohydrate intake in the 24-48 hours leading up to an endurance event.
Calorie Cycle (Zig-Zag) Calculator
Generate a daily zig-zag calorie cycle with high and low carb days to break weight loss plateaus.
Caffeine Half-Life & Sleep Window Calculator
Calculate how long caffeine from coffee or pre-workouts stays active in your system before sleep.
Sweat Rate Calculator
Calculate your hourly sweat loss rate during physical exercise to optimize hydration strategies.
Total Daily Energy Expenditure (TDEE) Calculator
Calculate your TDEE (Total Daily Energy Expenditure) to estimate the exact calories you burn each day.
Body Surface Area (BSA) Calculator
Estimate your total body surface area in square meters using the Mosteller and DuBois formulas.
Body Type Quiz & Somatotype Calculator
Identify if you are an Ectomorph, Mesomorph, or Endomorph based on bone structure and metabolism.
Body Fat Skinfold Caliper Calculator
Estimate your body fat percentage using 3-site Jackson-Pollock skinfold caliper measurements.
Metabolic Age Calculator
Estimate your metabolic age based on your basal metabolic rate, activity level, and body fat percentage.
Blood Volume Calculator
Estimate your total blood volume in liters based on height, weight, and gender using Nadler's formula.
Active Metabolic Rate (AMR) Calculator
Calculate your Active Metabolic Rate (AMR) to know how many calories you burn during workout days.
Body Symmetry Calculator (Grecian Ideal)
Compare your muscle measurements against the golden ratios and Grecian Ideal to evaluate symmetry.
Fat-Free Mass & Hydration Calculator
Calculate your total fat-free lean body mass and estimate your body water hydration capacity.
Workout Rest Timer
An interactive countdown rest timer for gym workouts to optimize recovery between heavy sets.
Intermittent Fasting Timer & Guide
Track your fasting and eating windows dynamically and learn what biological stage your body is in.
Daily Water Hydration Tracker & Schedule
Generate a personalized hourly water drinking schedule based on exercise length and weather.
Sauna Hydration Loss Calculator
Estimate sweat fluid loss during sauna sessions and view rehydration volume recommendations.
Caloric Deficit Planner
Forecast your exact targeted weight goal date based on daily caloric deficits.
Soreness & Recovery Grade Tracker
Grade your muscular soreness and recovery metrics to optimize exercise selection and gym readiness.
Sleep Quality & Recovery Efficiency Index
Analyze your sleep duration and exercise strain to compute your physical recovery index.
Calories Burned by Activity Calculator
Estimate the amount of active calories burned across running, cycling, lifting, and swimming exercises using MET values.
Smolov Squat Routine Calculator
Calculate target weights for the intense 13-week Smolov Squat routine based on your current 1-Rep Max.
Smolov Jr. Routine Calculator
Calculate weekly set, rep, and weight targets for the popular 3-week Smolov Jr. strength peaking program.
Wendler 5/3/1 Cycle Planner
Calculate training maxes, weekly cycles, and percentages for Jim Wendler's classic 5/3/1 powerlifting routine.
Coan-Philippi Deadlift Calculator
Generate weights for the legendary 10-week Coan-Philippi Deadlift program to boost your pull 1RM.
Dynamic Effort Speed Day Weight Calculator
Calculate barbell percentages, bands, or chain tension configurations for Westside Conjugate speed work.
Relative Strength Index (RSI) Calculator
Evaluate jump power and reactive capacity based on jump height and ground contact time.
Relative Intensity Calculator
Translate specific RPE targets and repetitions into equivalent percentage of 1-Rep Max.
Russian Squat Routine (RSR) Generator
Generate target loads for the famous 6-week Russian Squat strength and power program.
Korte 3x3 Program Planner
Generate workout sets and weights for the high-volume 8-week Korte 3x3 powerlifting routine.
Strength-to-Weight Ratio Index
Calculate and grade your lift capacities relative to your bodyweight across major compound exercises.
Running Pace to Treadmill Speed Converter
Convert running pace (minutes per mile or kilometer) to treadmill speed (mph or km/h) instantly.
Altitude Training Oxygen Estimator
Estimate the effective oxygen concentration and performance impact at different altitudes.
Yasso 800s Marathon Predictor
Predict your marathon finish time using Bart Yasso's classic 800-meter training repeats formula.
Cooper Test VO2 Max Rating
Estimate your VO2 Max and cardiovascular fitness grade based on Kenneth Cooper's 12-minute run test.
Running Power (Watts) Estimator
Estimate your running mechanical power output in watts based on pace, bodyweight, and terrain grade.
Treadmill Incline Calories & MET Calculator
Calculate the increased calorie burn rate and MET level when modifying the treadmill incline grade.
Step Length & Cadence Calculator
Estimate your average stride length and steps per minute based on height, speed, and overall pace.
Rowing Split & Watt Converter
Convert 500m split times to watts and calculate target distance and paces for rowing workouts.
Walk-Run Interval Planner (Galloway Method)
Generate customized walking and running intervals based on your goal pace to complete races without burnouts.
Running Age-Graded Calculator
Compare your running race finish times against age-group world standards to get an age-graded percentage score.
Protein Intake Calculator (Lean Mass Based)
Calculate your exact daily protein requirements based on your lean body mass and athletic goals.
Macro Carb Cycling Generator
Generate customized daily carb, protein, and fat distributions for a carb cycling diet plan.
Body Fat Target Calorie Deficit Estimator
Calculate the maximum safe weekly fat loss and caloric deficit to avoid losing muscle mass based on your current body fat.
Alcohol Calories & Fitness Recovery Impact
Estimate the total hidden calories in alcoholic drinks and calculate hydration recovery time windows.
Sodium-to-Potassium Ratio Calculator
Evaluate your dietary intake ratios of sodium and potassium to manage water retention and vascular health.
Energy Balance & Calorie Surplus Planner
Calculate the exact weekly calorie surplus required for lean muscle gains based on your training experience level.
Fiber-to-Carb Ratio Calculator
Evaluate the dietary quality of food products by calculating their fiber-to-carbohydrate ratios.
Daily Meal Calorie Distributer
Distribute your daily target calories and macronutrients into optimized meal sizes throughout the day.
Lean Bulking Rate Calculator
Determine your recommended weekly weight gain speed to maximize muscle hypertrophy while minimizing fat deposition.
Intermittent Fasting Calorie Window Planner
Plan and distribute your calorie intake and macronutrients inside restricted intermittent fasting eating windows.
Muscle Mass Potential (Butt Formula)
Estimate your maximum lean muscular size limits and bone structure capacity based on the John Butt formula.
Body Adiposity Index (BAI) Calculator
Estimate your body fat percentage using hip circumference and height measurements without calipers.
Navy Body Fat Calculator
Calculate your body fat percentage using the official US Navy circumference method (neck, waist, and hips).
Relative Fat Mass (RFM) Calculator
Estimate your body fat percentage instantly using only height and waist measurements.
Lean Body Mass (Boer vs James vs Hume)
Compare your lean body mass side-by-side using Boer, James, and Hume scientific formulas.
Waist-to-Hip Ratio Health Rating
Calculate your waist-to-hip circumference ratio to evaluate vascular health and physical body shape proportions.
Skeletal Muscle Mass Index (SMMI)
Estimate your total skeletal muscle weight and relative skeletal muscle mass index.
Shoulder-to-Waist Ratio (Adonis Index)
Calculate your shoulder-to-waist circumference ratio to grade your V-taper aesthetic symmetry.
Ponderal Index Calculator
Calculate your Rohrer's Ponderal Index to evaluate body proportionality, highly accurate for tall and short heights.
Body Volume Index (BVI) Estimator
Estimate your body volume index and adipose distribution using general body measurements.
Workout Consistency & Progression Tracker
Evaluate your exercise consistency rating and predict strength progression timelines based on weekly completions.
Physical Readiness for Exercise (PAR-Q) Quiz
Complete the standardized Physical Activity Readiness Questionnaire (PAR-Q) to ensure safe high-intensity workout readiness.