Network Mask Calculator

Convert between dotted-decimal, CIDR, wildcard

IP address, CIDR, mask, or prefix

Enter CIDR (192.168.1.0/24), an address with a mask (10.0.0.5 255.255.255.0), a bare mask (255.255.255.0), or a prefix (/24).

Examples:

CIDR prefix

/24

Subnet mask

255.255.255.0

Wildcard mask

0.0.0.255

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

Address class

C

Mask bits1 = network, 0 = host

11111111111111111111111100000000

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