What does this tool validate?

It validates barcodes (44 digits) and digitable lines (46, 47, or 48 digits) of bank and utility boletos. It checks verification digits, identifies boleto type, due date, and value.

Is it safe to enter boleto codes here?

Yes. All validation is done directly in your browser (client-side). No entered data is sent or stored on our servers, ensuring total privacy.

Does a validated boleto mean it is paid?

No. The tool only confirms that the code follows the mathematical and structural rules of the FEBRABAN standard. It does not consult banks or billing systems to verify payment status.

Boleto Validator

Convert Barcode to Digitable Line and vice-versa.

About the Boleto Validator

This tool allows you to validate barcodes and digitable lines of Brazilian bank boletos. It uses official FEBRABAN algorithms to verify check digits, identify boleto types, calculate due date and value, and convert between formats.

It is an essential tool for developers and software testers (QAs) who need to validate payment forms, billing systems, and banking integrations. A "valid" boleto means its numbering is structurally correct, but it does not guarantee that the document exists or is active in a bank.

Barcode

44 numeric digits
Bank and utility boletos
Automatic type identification

Digitable Line

46 digits (credit card)
47 digits (bank boletos)
48 digits (utility/agreement)

What the tool does

Verifies if the entered boleto number is correctly formatted
Checks if the verification digits comply with FEBRABAN rules
Alerts about common typing errors that might invalidate the boleto
Converts "Digitable Line" to "Barcode" and vice-versa
Automatically identifies the type of boleto (bank, utility, credit card)
Calculates and displays due date and value of the boleto

Limitations and Important Notices

What the tool does NOT do:

Does not verify the authenticity of the boleto (does not confirm if it's genuine or tampered with)
Does not provide information about the financial institution or issuing company
Does not replace detailed analysis by a specialized person
Does not consult banks or systems to verify payment status

Security Notice

If you suspect a boleto might be fraudulent, it is crucial to contact the financial institution or company responsible for issuing it directly. They can provide specific guidance on how to proceed and help verify authenticity.

Always remember to check the origin of boletos received, especially if via email or other electronic means. Be alert for signs of irregularity such as changes in boleto data or suspicious payment instructions.