Subnet Calculator
Calculate network details from an IP address and subnet mask. Get network address, broadcast address, usable host range, and total number of hosts for any IPv4 or IPv6 network.
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 |
Other IP Tools
IP to Number Converter · IP Range to CIDR · Expand/Collapse IPv6