🧮 Subnet Calculator
Calculate subnet details from CIDR notation or subnet mask. Find network address, broadcast, host range, and wildcard mask.
Network Address
Broadcast Address
First Host
Last Host
Subnet Mask
Wildcard Mask
Total Addresses
Usable Hosts
CIDR Notation
IP Class
Binary Subnet Mask
What is a Subnet Calculator?
A subnet calculator helps you divide a network into smaller sub-networks (subnets). Enter a CIDR notation like 192.168.1.0/24 to find the network address, broadcast address, host range, and subnet mask.
Common Subnet Masks
| CIDR | Subnet Mask | Hosts |
|---|---|---|
| /32 | 255.255.255.255 | 1 |
| /24 | 255.255.255.0 | 254 |
| /16 | 255.255.0.0 | 65,534 |
| /8 | 255.0.0.0 | 16,777,214 |