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Leandro Lima

CPF generator

Generate structurally valid Brazilian CPF numbers for testing.

Generators100% client-side

Options

This tool runs entirely in your browser. Nothing you type or paste is sent to a server, and your local history is stored only on this device.

Result

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About this tool

Produces CPF numbers whose check digits satisfy the official módulo 11 algorithm, so they pass the validation logic in your forms, fixtures and integration tests. You can also pick the state-of-issue digit, which is useful when a test case depends on regional routing.

These are synthetic numbers. They are structurally valid but are not registered with the Receita Federal and do not belong to any person — use them for test data, and never as a stand-in for a real document.

How to use it

  1. 1Choose how many CPFs to generate and whether to format them with dots and a dash.
  2. 2Optionally pin the state-of-issue digit.
  3. 3Copy the batch into your test fixtures.

Privacy

This tool runs entirely in your browser. Nothing you type or paste is sent to a server, and your local history is stored only on this device.

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