Subnet Calculator
Calculate network details from an IP address and subnet mask. Get network address, broadcast address, usable host range, and total hosts.
Enter an IP with CIDR (e.g., 192.168.1.0/24) or select prefix from dropdown
Common Subnet Sizes
| CIDR | Subnet Mask | Wildcard | Usable Hosts |
|---|---|---|---|
| /24 | 255.255.255.0 | 0.0.0.255 | 254 |
| /25 | 255.255.255.128 | 0.0.0.127 | 126 |
| /26 | 255.255.255.192 | 0.0.0.63 | 62 |
| /27 | 255.255.255.224 | 0.0.0.31 | 30 |
| /28 | 255.255.255.240 | 0.0.0.15 | 14 |
| /29 | 255.255.255.248 | 0.0.0.7 | 6 |
| /30 | 255.255.255.252 | 0.0.0.3 | 2 |