Subnet Calculator
Calculate IPv4 subnets online for free. Enter a CIDR like 192.168.1.10/24 to get netmask, network, broadcast, host range and usable host count.
| Network | 192.168.1.0/24 |
|---|---|
| Netmask | 255.255.255.0 |
| Wildcard mask | 0.0.0.255 |
| Broadcast | 192.168.1.255 |
| Host range | 192.168.1.1 – 192.168.1.254 |
| Usable hosts | 254 (8 host bits) |
| Class / scope | Class C — private (RFC 1918) |
About Subnet Calculator
Enter any IPv4 CIDR — like 10.0.0.5/30 or 192.168.1.10/24 — and instantly get the network address, broadcast address, netmask, wildcard mask, usable host range and host count.
Class and RFC 1918 private-range detection included. All computation runs locally in your browser.