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Kuwait IBAN validator

How the IBAN format works

Format
KW + 2 check digits + 4-letter bank code + 22-char account number (30 chars)
Example
KW81CBKU0000000000001234560101

Things to watch for

  • One of the longest IBANs in use, at 30 characters.
  • Checks structure and checksum only, not that the account exists
Regex for IBAN
^KW[0-9]{2}[A-Z]{4}[0-9A-Z]{22}$

A Kuwait IBAN is 30 characters long — one of the longest IBAN formats currently in use, tied with Jordan’s. It breaks down into “KW”, two check digits, a 4-letter bank code, and a 22-character account-number block that mixes digits and letters. That 22-character account block alone is nearly the length of an entire UK or German IBAN, which is why getting every character in the right position matters more here than almost anywhere else: with 30 characters to type or copy correctly, the odds of a single dropped or transposed character rise sharply. Anyone sending an international transfer to Kuwait, settling an invoice, or filling in a payment form asking for an IBAN needs the full string exact.

How this validator works

This validator checks the “KW” prefix, confirms the bank-code block is 4 letters and the account-number block is 22 alphanumeric characters, then runs the mod-97 checksum (ISO 7064) that Kuwaiti banks use to generate a valid IBAN — all client-side, no data leaves your browser, no account needed. Given how long the account block is, the checksum step earns its keep here: it’s specifically built to catch the kind of single-character slip that’s easy to make when typing out 22 characters by hand.

What a pass doesn’t tell you

A green result here means the IBAN is correctly formed and internally consistent — nothing about whether the account behind it is real, open, or owned by whoever you expect. This tool does no bank-name lookup and makes no contact with the Central Bank of Kuwait or any clearing system. If a Kuwait IBAN fails, work through the 22-character account block in short chunks against your source document — that’s where transcription errors most often hide in a string this long.

Scope: Kuwait IBAN structure and mod-97 checksum validation only — not payment processing or proof an account is active. Use it to catch a typo before a transfer fails; confirm the account itself with your bank.

Content last reviewed 2026-07-09.

IBAN FAQ

Is a Kuwaiti IBAN one of the longest in the world?

Yes — at 30 characters, Kuwait's IBAN is among the longest formats in current use (tied with Jordan's), roughly a third longer than a typical 22-character European IBAN like Germany's or the UK's. A few formats run longer still, such as Malta's 31 characters and Saint Lucia's 32.

What's inside a 30-character Kuwait IBAN?

'KW', two check digits, a 4-letter bank code, and a 22-character alphanumeric account-number block — for example KW81CBKU0000000000001234560101, where CBKU is the bank code.

Does a passing checksum confirm the Kuwaiti account is active?

No. It confirms only that the 30 characters are correctly structured and pass the mod-97 checksum. This tool never contacts a Kuwaiti bank or the Central Bank of Kuwait, so it can't confirm the account exists or is open.

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