Checkers
IBAN validator
Check an IBAN checksum and country length. The number never leaves this tab.
A sort code checker checks that a UK sort code is six digits and shows which bank it belongs to. Type or paste 12-34-56, the same number with spaces, or 123456. The page splits those digits into bank, area, and branch. The bank name comes from a list stored in your browser, so nothing is sent to your bank. If the code is not on the list, you still get the format check, but no bank name. It cannot show a balance or tell you whether an account is open.
Client-side validation only · No network requests · Never sent to any bank
Accepts 12-34-56, 12 34 56, or 6 raw digits.
Optional 8-digit UK account number to check length.
20-00-00
200000
Barclays Bank UK
Sort Code Anatomy Breakdown
Client-Side Format Validation Disclaimer
This tool checks the numerical 6-digit structure and standard UK clearing bank prefixes entirely in your browser. It does not perform a live Vocalink, EISCD, or Open Banking check and cannot verify whether a specific bank account is open, active, or accepting payments. Never transmit sensitive banking passwords or security tokens.
Checking a Barclays sort code
Type 20-00-00. The page confirms six digits, shows 200000 as the plain number, and matches 20 to Barclays Bank UK.
UK payouts still quote sort code + account number. Catching a transposed digit before you submit a payment file is cheaper than a failed BACS.
Live account verification needs a licensed API. This checker is format and prefix only.
Static clearing-bank table. No confirmation of payee. GB IBANs show the embedded sort-code digits as format only.
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Check an IBAN checksum and country length. The number never leaves this tab.
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