IP Subnet Calculator

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📶 IP Subnet Calculator

Calculate network details: usable IP ranges, broadcast address, netmask wildcard, IP class, and host capacity instantly.

Subnet Details:

Network Address -
Subnet Mask -
Broadcast Address -
Usable Host Range -
Total Usable Hosts -
Wildcard Mask -
IP Class -

How Subnet Calculator works

  1. Input a valid IPv4 address (four dot-separated octet numbers from 0 to 255) inside the **IP Address** field.
  2. Select a CIDR network mask size (from `/1` down to `/32`) using the dropdown list.
  3. Click **Calculate Subnet** — the calculator converts the IP and CIDR mask into binary bits, aligns them with a bitwise logical `AND` mask, and extracts the results.
  4. The system computes the exact start IP, end IP, broadcast boundary, IP class (A, B, C, D, or E), and usable network capacity.