CIDR Calculator

Calculate network range, mask, and usable hosts.

How to use CIDR Calculator

  1. Enter or paste the source value into the tool.
  2. Choose the relevant cidr calculator options.
  3. Review and copy or download the generated result.

Processing and privacy

The supported processing runs locally in your browser.

This tool has a real browser-side processing path and passed representative verification.

Common questions

Is CIDR Calculator available now?

Available now and verified for normal production use.

Where does processing happen?

The supported processing runs locally in your browser.

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