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Numio

IBAN Validator — Check IBAN Numbers Online (Batch)

Check IBANs for the correct length, country format and mod-97 check digits. Paste up to 500 IBANs, one per line; see the country, the formatted IBAN and what is wrong. Runs in your browser.

IBANs (one per line)

83 chars3 lines

Result

Type or paste on the left — the result updates as you type.

One IBAN per line, with or without spaces. The check confirms format and check digits only — not that the account exists or who holds it.

Up to 100,000 UTF-16 units per input and 1,000,000 per result. See the supported formats and examples below.

Format references

Tool page updated: