Search for a command to run...
Calculate network address, subnet mask, host range and wildcard mask for IPv4 CIDR blocks.
Runs locally in your browser by default — nothing is uploaded first.
Enter a single IPv4 address with CIDR prefix, for example 10.0.12.7/20.
Examples: 192.168.1.10/24, 10.0.0.5/8, 172.16.8.9/20.
IP / CIDR Calculator runs locally in your browser by default, so you can work with the content without uploading it first.
Calculate network address, mask, broadcast, host range and binary representation for IPv4 CIDR blocks.
Does IP / CIDR Calculator run locally or in the cloud?
IP / CIDR Calculator runs locally in your browser by default, so you can work with the content without uploading it first.
What usually comes after IP / CIDR Calculator?
A common next step is to continue into related workflows such as Network and DevOps Tools.
How many usable hosts are in a /24?
254. The block holds 256 addresses, and the network and broadcast addresses cannot be assigned.
Calculate network address, mask, broadcast, host range and binary representation for IPv4 CIDR blocks.
