tools.junyo.dev

CPF/CNPJ Validator

Validate Brazilian CPF and CNPJ check digits, format the number and understand the result locally.

Details below
About this tool

Mathematical validation, not registry lookup.

The tool removes punctuation, detects CPF or CNPJ, rejects repeated sequences and calculates check digits to indicate whether the format is coherent.

How to use

Paste the number and read the result card.

  1. Type or paste CPF/CNPJ with or without punctuation.
  2. Check the detected type, status and formatted version.
  3. Copy the formatted version if you need it for tests or documentation.
FAQ

Frequently asked questions

No. It only validates check digits and formatting.

Brazilian Documents

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