About this Tool
Our tool mathematically verifies the validation digits of any given CPF (Cadastro de Pessoas Físicas) or CNPJ (Cadastro Nacional da Pessoa Jurídica) to ensure it is a valid Brazilian document format.
Frequently Asked Questions
Does this check if the document is active with the Receita Federal?
No. This tool only validates the mathematical algorithm of the document numbers (the verification digits) to ensure it is a valid sequence.