Tools / CIDR Calculator

CIDR Calculator

Calculate subnet mask, broadcast address, host range, and more from any CIDR block. Runs entirely in your browser.

CIDR notation

Network Address192.168.1.0

Broadcast Address192.168.1.255

Subnet Mask255.255.255.0

Wildcard Mask0.0.0.255

First Host192.168.1.1

Last Host192.168.1.254

Usable Hosts254

Total Addresses256

IP ClassC

Network (Binary)11000000.10101000.00000001.00000000

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