Free IT Tool
Subnet calculator.
Enter any IPv4 address and CIDR prefix to get the full breakdown — no more doing this by hand.
Network and broadcast address, subnet mask and wildcard mask.
Usable host range and total address count, including /31 and /32.
Runs entirely in your browser — nothing is sent anywhere.
- Network address192.168.1.0
- Broadcast address192.168.1.255
- Subnet mask255.255.255.0 (/24)
- Wildcard mask0.0.0.255
- Usable host range192.168.1.1 – 192.168.1.254
- Usable hosts254
- Total addresses256