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IP Subnet Calculator

Enter a CIDR block (e.g. 192.168.1.0/24) to calculate network address, broadcast, host range, subnet mask, and usable host count.

192.168.1.0/24Class CPrivate
Network Address
192.168.1.0
Broadcast Address
192.168.1.255
First Usable Host
192.168.1.1
Last Usable Host
192.168.1.254
Total Hosts
256
Usable Hosts
254
Subnet Mask
255.255.255.0
Wildcard Mask
0.0.0.255
Binary Mask
11111111 11111111 11111111 00000000
IP (Binary)
11000000 10101000 00000001 00000000

Common Subnet Reference

CIDRSubnet MaskUsable Hosts
/8255.0.0.016,777,214
/16255.255.0.065,534
/24255.255.255.0254
/25255.255.255.128126
/26255.255.255.19262
/27255.255.255.22430
/28255.255.255.24014
/29255.255.255.2486
/30255.255.255.2522