Subnet Calculator
NewCalculate IP subnets, network addresses, broadcast addresses, and available host ranges.
networkFree • No signup
/
More hostsFewer hosts
/0/8/16/24/32
Common Subnet Reference
| CIDR | Subnet Mask | Usable Hosts |
|---|---|---|
| /8 | 255.0.0.0 | 16,777,214 |
| /16 | 255.255.0.0 | 65,534 |
| /24 | 255.255.255.0 | 254 |
| /25 | 255.255.255.128 | 126 |
| /26 | 255.255.255.192 | 62 |
| /27 | 255.255.255.224 | 30 |
| /28 | 255.255.255.240 | 14 |
| /29 | 255.255.255.248 | 6 |
| /30 | 255.255.255.252 | 2 |
| /31 | 255.255.255.254 | 2 (P2P) |
| /32 | 255.255.255.255 | 1 |
100% Client-Side: All calculations are performed locally in your browser. No data is sent to any server. You can enter IP addresses with CIDR notation (e.g., 192.168.1.0/24) or separately.
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