Subnet Calculator
Calculate network details for any IP address and CIDR subnet mask.
How to Use the Subnet Calculator
Enter an IP address and CIDR prefix (e.g., 192.168.1.0/24) to calculate the network address, broadcast address, usable host range, subnet mask, and total number of hosts.
Common CIDR Prefixes
- /32 — 1 address (single host)
- /24 — 256 addresses (254 usable, typical home network)
- /16 — 65,536 addresses (large network)
- /8 — 16,777,216 addresses (very large network)