Dedicated variation for validar cnpj online. Use CNPJ Validator and Generator with the full workflow from the main tool, with no sign-up and no login.
Validate Brazilian CNPJ numbers, generate test lists, and export TXT, CSV, or JSON.
Formatted
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Digits only
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Use 0001 for headquarters or enter another branch code.
Generate CNPJs to view the list.
Generation runs locally in your browser. No CNPJ is sent to a server.
Different search intents mapped to the same tool to cover alternative query patterns.
The tool strips punctuation, calculates both CNPJ check digits, and shows formatted and digits-only output. This helps separate mask issues from true algorithm errors.
Generated CNPJs are useful for forms, QA, staging, and automated tests. They do not identify real companies and should not be used for fraud or impersonation.
Generate 1 to 200 CNPJs at once, set the branch code, and choose formatted or raw digits. Copy the list or download it for spreadsheets, fixtures, and scripts.
Processing happens in the browser whenever possible. Files and inputs do not need to be uploaded to the site server for the main workflow.
A mathematically valid CNPJ does not prove legal existence, status, or official registry data. This page validates only numeric structure and check digits.
No. It is valid by algorithm only and does not query any official registry.
Yes. Choose the no-punctuation option to output the 14 digits only.
Yes. The intended use is QA, staging, fixtures, and input validation.
No by default. Validation and generation run locally in the browser.
Helpful links to continue similar tasks without starting over.
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Validate boleto lines or barcodes, convert formats, and extract due date, amount, and free field.
Tools on this page run directly in your browser and do not send entered content to a backend. This improves privacy and reduces latency.
