IP Subnet Calculator

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Compute network, broadcast, mask and host range for IPv4 / IPv6.

100% private — no uploads Developer ToolsFree & unlimited Read tutorial

See how it works

Watch a quick simulation of this tool in action — no file needed.

How to use IP Subnet Calculator

Follow these steps — everything happens instantly in your browser.

  1. 1

    Step 1. Pick IPv4 or IPv6.

  2. 2

    Step 2. Enter the IP address and CIDR prefix.

  3. 3

    Step 3. Click Calculate.

  4. 4

    Step 4. Click any value to copy it.

Why use this tool

Frequently asked questions

Everything you might want to know about ip subnet calculator.

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