What is a Dice Roller?
A dice roller simulates rolling standard polyhedral dice used in tabletop RPGs like Dungeons & Dragons (D&D), Pathfinder, and other games. Common dice include the d6 (standard cube), d20 (used for D&D attack rolls and saving throws), d4, d8, d10, d12, and d100 (percentile). Our roller supports DnD notation (e.g. "2d6+3") and up to 20 dice at once.
How to Use
- Select a dice type (d4 through d100) using the preset buttons.
- Choose the number of dice and add a modifier if needed.
- Or type in DnD notation like "3d8+5" and click Parse.
- Click Roll! to roll. See individual results and the total.
Frequently Asked Questions
In D&D (Dungeons & Dragons) and Pathfinder, the d20 is the most important die. It's used for attack rolls, skill checks, saving throws, and ability checks. Rolling a 20 is a "natural 20" (critical hit), while rolling a 1 is a critical failure. The d20 system is the foundation of most modern tabletop RPGs.
D&D uses 7 standard dice: d4 (rarely used, often for small weapons), d6 (common weapons and stat generation), d8 (medium weapons like longswords), d10 (heavy weapons), d12 (greataxe), d20 (ability checks and attacks), and d100 (percentile, rolled as two d10s). All are supported in our roller.
Enter standard DnD notation in the notation box: "2d6" rolls two six-sided dice, "1d20+5" rolls a d20 with a +5 modifier (for attack rolls), "4d6" is standard for ability score generation in D&D (drop the lowest die). Our roller shows each individual die result plus the total.
1 in 6, or about 16.67%. Rolling two 6s on 2d6 is 1/36 = 2.78%. Each die roll is independent and equally likely across all faces. For a d20, the probability of any specific number is 1/20 = 5%, and a natural 20 (critical hit) chance is also exactly 5%.