Subnet Calculator
Calculate subnet mask, network address, broadcast address, and host range from CIDR notation
All processing happens in your browser. No data is uploaded.
Subnet Calculator
Calculate subnet mask, network address, broadcast address, and host range from CIDR notation
🔒All processing happens in your browser. No data is uploaded.
Input
Common Subnets
/8 (255.0.0.0)
/16 (255.255.0.0)
/20 (255.255.240.0)
/22 (255.255.252.0)
/24 (255.255.255.0)
/25 (255.255.255.128)
/26 (255.255.255.192)
/27 (255.255.255.224)
/28 (255.255.255.240)
/30 (255.255.255.252)
/32 (255.255.255.255)
CIDR Notation
192.168.1.0/24Private Range
Results
Network Address
192.168.1.011000000.10101000.00000001.00000000Broadcast Address
192.168.1.25511000000.10101000.00000001.11111111Subnet Mask
255.255.255.011111111.11111111.11111111.00000000Wildcard Mask
0.0.0.25500000000.00000000.00000000.11111111First Usable Host
192.168.1.1Last Usable Host
192.168.1.254Total Addresses
256Usable Hosts
254IP Class
Class CHost Range
192.168.1.1-192.168.1.254