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Tool
CNPJ Generator & Validator
Generate
Creates a random, fictitious CNPJ number with correctly computed check digits — useful for filling test forms and fixtures. It is not a real, registered company number.
Your CNPJ will appear here.
Fictitious number for development and testing only — not a real
CNPJ.
Validate
Checks whether a CNPJ's two check digits are mathematically consistent with its base digits. This only verifies the format/checksum — it does not confirm the number is actually registered.
Result will appear here.