Extract & Validate IBANs
Paste any text and pull out every IBAN — each checked with the ISO 13616 mod-97 checksum, deduplicated, and split into valid and invalid. Runs in your browser; nothing is uploaded.
About this tool
Extract & Validate IBANs scans pasted text — an invoice, an email, a bank statement, a log — and pulls out every IBAN it contains, checking each one with the official ISO 13616 mod-97 checksum and the country-specific length.
- Finds IBANs in messy text: grouped in the usual 4-character blocks
(
GB82 WEST 1234 5698 7654 32) or written contiguously (DE89370400440532013000), with surrounding punctuation stripped. - Validated, not just matched: each candidate is sized to its country's registered IBAN length and run through the mod-97 (ISO 7064) checksum, so a single mistyped character is caught.
- Split into valid and invalid: correct IBANs are listed with their country and 4-block formatting; structurally IBAN-shaped strings that fail the checksum are listed separately so you can spot typos.
- Deduplicated in first-seen order — the same IBAN written two ways (spaced and unspaced) counts once.
Everything runs locally in your browser via WebAssembly — the text you paste is never uploaded.
Worked example
Paste:
Please remit payment to GB82 WEST 1234 5698 7654 32. Our old account
DE89 3704 0044 0532 0130 00 is no longer in use.
Result:
Found 2 IBAN(s): 2 valid, 0 invalid.
Valid (2):
GB82 WEST 1234 5698 7654 32 - United Kingdom
DE89 3704 0044 0532 0130 00 - Germany
Handy for
- Pulling the payee IBAN out of an invoice or email without retyping it.
- Sanity-checking a batch of pasted account numbers for typos before a transfer.
- Extracting a deduplicated IBAN list from a statement or export.
Limits & edge cases
- Detects IBANs for the ~78 countries in the SWIFT IBAN registry (a two-letter
country code with no registered IBAN, e.g.
US, is skipped). - Checksum, not existence. Passing mod-97 proves an IBAN is well-formed for its country — it does not prove the account is open or that the bank still exists. Only the bank can confirm that.
- It reports the country and the bank/account components parsed from the BBAN, but does not look up the bank's name or BIC.
FAQ
Does it work if the IBANs have no spaces, or unusual spacing?
Yes. Each IBAN is anchored at its two-letter country code plus two check digits
and read up to that country's exact registered length, tolerating the standard
4-character grouping spaces. So DE89370400440532013000 and
DE89 3704 0044 0532 0130 00 are both found — and recognized as the same IBAN.
What does "invalid" mean in the results?
An invalid entry is a string that looks like an IBAN — right country code, right length — but fails the ISO 13616 mod-97 checksum. That almost always means a mistyped or corrupted digit, so it's flagged separately instead of silently dropped.
Does a valid IBAN mean the account exists?
No. The mod-97 checksum only proves the IBAN is mathematically well-formed for its country. An IBAN can pass the check and still belong to a closed or never-opened account — only the account's bank can confirm it actually exists.
Does it look up the bank name or BIC?
No. It reports the country and, for common countries, the bank code and account number parsed out of the BBAN, but it does not resolve the bank's name or BIC — that needs an external bank-directory lookup, which this in-browser tool doesn't do.
Is my text uploaded anywhere?
No. The whole scan runs locally in your browser through WebAssembly. The text you paste never leaves your device.
Developer & Automation Access
Run it from the terminal
Same engine as this page, headless — via the gizza CLI:
gizza tool iban-extractor-validator "Paste an invoice, email, or statement containing IBANs…"New to the CLI? Get gizza →
Open it by URL
Pre-fill and auto-run this tool with query parameters — the names match the API/CLI:
https://gizza.ai/tools/iban-extractor-validator/?text=Paste%20an%20invoice%2C%20email%2C%20or%20statement%20containing%20IBANs%E2%80%A6Machine-readable descriptor: tool.json — title + parameters JSON Schema for agents.