Calculate & ValidateIBAN Check Digits

Professional IBAN calculator and validator for 60+ countries

Calculate missing check digits • Validate complete IBANs • Get instant support

حاسبة ومدقق أرقام التحقق IBAN • Calculateur et validateur IBAN professionnel • Professional IBAN Calculator Platform

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Your IBAN data never leaves your device. We only track anonymous usage statistics (country, success/failure) to improve the service.

IBAN Calculator

Enter your 10- or 18-digit reference. If 10 digits, also provide Bank Code (3) and Branch Code (5).

Country / Pays / البلد

Bank Account Number

Example: 123456001234567890

Use only if you want to construct a new IBAN from account details. For validation, paste a full IBAN above.

Result

Your complete IBAN with calculated check digits

Enter your account number and click calculate to see the result

IBAN Validator/Inspector

Validate any complete IBAN to check if it's correct or inspect it to see the details

Complete IBAN

How it works

Input your bank account number without country code

Using ISO 13616 MOD-97 algorithm

Copy your valid IBAN for bank transfers

Country Support

✅ We Support

16 countries with full IBAN calculation • 84 countries with validation only

International Standards

Learn the complete MOD-97 algorithm, understand country-specific formats, and troubleshoot common issues with our comprehensive guide.

Step-by-step algorithm

60+ country formats

Troubleshooting tips