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🏦 IBAN Validator / Generator

Validate IBANs with live checksum (MOD 97) and formatting. Generate checksum-valid sample IBANs by country, copy or format in groups of 4.

IBAN Validator / Generator

Validate IBANs using the official MOD 97 checksum and correct length per country. Generate checksum-valid sample IBANs by country (synthetic).

Validate IBAN

Format in groups of 4

Samples:

Invalid IBAN

Country

—

Length

Expected

—

Check digits

—

Reason

Enter an IBAN to validate.

Generate Sample IBAN

Country

—

Note: Generated IBANs are checksum-valid but synthetic and may not pass national BBAN structure rules or bank validations.

How to use this tool

Paste an IBAN to validate its length and MOD 97 checksum.
Toggle grouping to match how your product displays or stores IBANs.
Generate synthetic examples per country when you need test fixtures or demos.

Where it helps

QA teams preparing regression suites for payment onboarding flows.
Support reps confirming that customer-supplied IBANs meet length requirements.
Developers needing sample data when seeding staging databases.

Validation tips

The checksum verifies structure but not whether the underlying account exists—perform additional bank-level checks when required.
Always strip spaces before sending IBANs to payment processors.
Compare the detected country and expected length with your business rules to catch mismatches early.

FAQ

Are generated IBANs real?: No. They pass the MOD 97 checksum and length rules but are intentionally synthetic so they won't hit real accounts.
Why did my IBAN fail even though it looks right?: Some countries enforce additional BBAN formatting beyond checksum and length. Consult national specs if you need deeper validation.
Can I export a list of samples?: Generate and copy individual IBANs as needed. Batch export is on the roadmap.

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