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IBAN Calculator – Calculate & Check Any IBAN

Calculate any SEPA IBAN from local bank code and account number, check IBAN validity with MOD-97 check digits, and find the bank name and BIC — 100% free and in-browser.

🔒 All calculations run 100% in your browser. No account details are ever sent to a server.

IBAN Checker

The International Bank Account Number (IBAN) standardizes bank accounts across Europe and over 90 countries worldwide. Before issuing a cross-border or domestic wire transfer, use our dedicated IBAN checker to verify formatting, country length specifications, and ISO 7064 (MOD-97-10) check digits. The smart input above automatically determines whether you pasted an IBAN or entered national bank codes.

Find the Bank and BIC Behind an IBAN

Every IBAN embeds the national routing code of the receiving bank — such as the Bankleitzahl (BLZ) in Germany, the Code Banque in France, the ABI code in Italy, or the Entidad code in Spain. IBANCalc decodes these codes and displays the official financial institution name and its corresponding BIC / SWIFT code for SEPA routing. You can also search institutions directly via our BIC finder.

Bulk IBAN Checker – Free

Need to validate an entire payroll batch or customer refund list? Visit our Bulk IBAN Checker to paste up to 100 IBANs at once. Spot invalid check digits instantly and export the verified report as a CSV spreadsheet — completely free, with zero sign-up required.