Does a valid CNPJ mean the company exists?

Not necessarily. The validation only checks if the number follows the correct mathematical pattern. Use the CNPJ lookup to check if it is registered.

What is the difference between validating and looking up a CNPJ?

Validating checks if the number is mathematically correct. Looking up retrieves the actual company data from the Receita Federal.

Check if a CNPJ is valid quickly and for free

Enter the CNPJ

• A CNPJ has 14 digits, with the last 2 being check digits
• The check digits are calculated using a mathematical algorithm
• CNPJs with all identical digits are invalid
• The validation only checks the format, it does not confirm if the CNPJ exists at the Receita Federal
• To look up company data, use our CNPJ Lookup tool