IP Address & Subnet Calculator

Convert IPv4 or IPv6 and inspect exact CIDR boundaries.

IP Address & Subnet Calculator
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Ready when you are

Add your input, adjust the options and run the tool.

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Options
Runs in your browser
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How to use this tool

01

Add your input

Paste text or choose a file. Try the example to get started.

02

Choose your options

Convert IPv4 or IPv6 and inspect exact CIDR boundaries.

03

Inspect and export

Review the processing notes, then copy or download the result. Continue with another tool if needed.