Generate dummy IBANs with valid mod-97 checksums for testing payment forms, validation logic and UI mockups. Supports several countries with correct per-country lengths. For testing only, never for real transfers.
Everything runs locally. Nothing is sent to any server.
A valid IBAN is not just random digits: the two check digits after the country code are computed with the ISO 13616 mod-97 algorithm. The BBAN is moved behind the country code and 00, the letters become numbers (A=10, B=11, and so on), and the check digits equal 98 minus the remainder mod 97. Every IBAN this tool makes passes that checksum, so it survives format validation in test suites.
Use these IBANs for form validation testing, UI mockups and payment-flow QA where a field must look structurally valid. They are random and belong to nobody. Never use them for real transfers, KYC checks or anything touching real money: banks will reject them and misuse can look like fraud.