IBAN Calculator

Generate valid IBAN numbers from country code and BBAN with instant validation and formatting.

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About This Tool

This IBAN calculator tool allows you to generate valid International Bank Account Numbers (IBAN) by selecting a country and entering your Basic Bank Account Number (BBAN). The tool calculates the correct check digits, formats the IBAN according to ISO 13616 standards, and validates the result. It supports all SEPA countries and provides detailed breakdown of the IBAN components including country code, check digits, BBAN, and bank identifier. The calculator works entirely client-side for privacy and speed.

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How to Use

Select your country from the dropdown menu
Enter your Basic Bank Account Number (BBAN) in the input field
Click 'Calculate IBAN' to generate the valid IBAN
View the formatted IBAN result with detailed breakdown
Use the 'Copy IBAN' button to copy the result to clipboard
For validation, paste an existing IBAN into the BBAN field and select the corresponding country

Frequently Asked Questions

Find Quick Answers

What is an IBAN?

IBAN (International Bank Account Number) is a standardized international bank account numbering system that identifies bank accounts across national borders. It consists of up to 34 alphanumeric characters including country code, check digits, and Basic Bank Account Number (BBAN).

Which countries are supported?

The calculator supports all SEPA (Single Euro Payments Area) countries including all EU member states, UK, Switzerland, Norway, Iceland, Liechtenstein, Monaco, San Marino, and Vatican City. The tool includes country-specific IBAN length validation.

Is my banking data secure?

Yes, all calculations are performed entirely in your browser. No data is sent to any server, ensuring complete privacy and security for your banking information.

What is the difference between IBAN and BBAN?

BBAN (Basic Bank Account Number) is the domestic bank account number used within a country. IBAN is the international version that includes the country code and check digits before the BBAN, making it usable for cross-border transactions.

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