IP & Network

IP Range Calculator

Calculate the first and last address and total address count for an IPv4 or IPv6 CIDR range locally.

This tool processes your data in your browser. Files and text are not uploaded. Browser processing
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How to use

  1. Use the input controls to provide the content or file.
  2. Adjust options if available, then run the tool.
  3. Review the result and copy or download it.

Features

  • Local browser processing
  • No account required
  • Works on mobile and desktop

Frequently asked questions

Is my data uploaded?

For browser-processed tools, your data stays in this browser. The Public IP Checker is the exception and clearly discloses its provider.

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