IP Subnet Calculator

Calculate CIDR, network mask, broadcast address, and host range.

ip subnet cidr network mask

IP Address (e.g. 192.168.1.1)

Subnet Mask / CIDR

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IP Subnet Calculator requires JavaScript to run. All processing happens client-side in your browser — your data never leaves your device.

Calculate CIDR, network mask, broadcast address, and host range.

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