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  5. IP/Subnet Calculator

IP/Subnet Calculator

Calculate network address, broadcast, and host range from IP and CIDR.

Result
Network: 192.168.1.0
Subnet mask: 255.255.255.0
Broadcast: 192.168.1.255
First host: 192.168.1.1
Last host: 192.168.1.254
Usable hosts: 254

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›How it works
  1. 1Enter an IP address (e.g. 192.168.1.0).
  2. 2Enter CIDR notation (e.g. /24 or 24).
  3. 3The tool calculates network, broadcast, first/last host, and usable hosts.
  4. 4Use for subnet planning and network design.

Example

192.168.1.0/24 → Network: 192.168.1.0, Broadcast: 192.168.1.255, 254 usable hosts