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CIDR IP Calculator

Calculate IPv4 and IPv6 CIDR network info: network address, broadcast, host range, subnet mask, wildcard, host count. 100% offline.

100% Private Works Offline Instant

Calculate IPv4 and IPv6 CIDR network info: network address, broadcast, host range, subnet mask, wildcard, host count. 100% offline. Everything runs locally in your browser — your data never leaves your device.

How to use

  1. Enter your input in the tool above.
  2. Adjust any options to your preference.
  3. Use the Copy or Download buttons to save the result.
  4. Everything happens locally — your data never leaves your browser.
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