IBAN Validator checks International Bank Account Numbers with the official mod 97 checksum, formats them with spaces, and compares length against a table of common EU and SEPA countries.
What IBAN Validator does
Cleans, formats, and validates IBAN strings locally.
- Mod 97 checksum per ISO 13616
- Space formatting every four characters
- Country length table for common EU countries
- Clear VALID or INVALID messaging
- Copy formatted IBAN
Who IBAN Validator is for
- Finance teams verifying payee details
- Developers testing form validation
- Freelancers checking invoice bank fields
- Support agents confirming SEPA numbers
How to use IBAN Validator
1. Paste an IBAN with or without spaces.
2. Click Validate.
3. Read length and checksum results.
4. Copy the spaced format when you need a tidy string.
Features
- Client-side only
- Common EU length map
- Character class checks
- Formatted copy helper
Examples
- DE89 3704 0044 0532 0130 00 sample style checks.
- Catch a transposed check digit before a wire.
- Normalize messy paste spacing from email.
Tips and limits
- Length tables cover common countries; exotic jurisdictions may be missing.
- Checksum validity is not a guarantee the account exists at the bank.
- Never paste live credentials into untrusted pages; this tool stays local.
- Use uppercase letters A-Z for country codes.
Related tools
- Credit Card Luhn Check for demo card number checks.
- ISBN Converter for another checksum workflow.
FAQ
Is my IBAN uploaded?
No. Validation runs entirely in your browser.
Why length mismatch?
The country code maps to an expected length; wrong length fails even if digits look plausible.
Does VALID mean the account is real?
No. It only means the string passes checksum and length rules.
Extra notes
IBAN Validator runs entirely in your browser so drafts and secrets never need to leave your device for processing. Keep a backup of long outputs in your own notes if you rely on them for production servers or live events. Accessibility friendly labels come from the module UI strings, and the layout follows the shared BeeForge .bf-tool shell for consistent spacing and buttons.
Support for developers, marketers, and everyday users is the same client-side model: open the page, configure options, copy or download, then paste into your workflow. BeeForge related links on the tool page point to companion utilities so you can move between related generators without hunting the hub.
When you share results with a teammate, paste into a ticket or gist rather than screenshotting alone, so the text remains searchable. If a browser privacy mode blocks clipboard helpers, select the output manually. Local processing also means the tool works offline after the page and scripts have loaded once.
Validate generated configs or hashes in a staging environment before production use. Prefer regenerating secrets after any accidental paste into chat. For teaching sessions, walk through one sample input end to end so students see how live updates and copy buttons behave together.
Bookmark the tool page if you use it weekly. Small habit changes like consistent naming and clear file downloads save more time than hunting another converter. Prefer regenerating after you change inputs rather than editing outputs by hand when the source fields still exist.