CIDR Calc

Subnet math without the headache.

Switch between CIDR, masks, prefixes, or ranges and share the result instantly.

CIDR

Examples

Results

Calculated outputs

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 addresses

256

Usable hosts

254

Subnet mask

255.255.255.0 (/24)

Wildcard mask

0.0.0.255

Binary IP

11000000 10101000 00000001 00000000

Binary mask

11111111 11111111 11111111 00000000

Binary network

11000000 10101000 00000001 00000000

Binary broadcast

11000000 10101000 00000001 11111111

Class

Class C

Private

Public