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IBAN Validator

Verify International Bank Account Numbers instantly with the official mod 97 checksum. Paste an IBAN to confirm its structure before sending funds.

Free to use, no watermarks, runs in your browser—nothing uploads to our servers

Enter IBAN

Normalized IBAN

DE89 3704 0044 0532 0130 00

Country code: DE

Valid

The validator follows ISO 13616: we remove whitespace, move the four leading characters to the end, replace letters with numbers (A=10, B=11, …), and ensure the resulting number has a remainder of 1 when divided by 97.

Report a bug

If this tool misbehaves, share a quick summary so we can investigate. We include the tool URL automatically—no need to copy and paste.