IBAN & SWIFT/BIC validator
Free client-side IBAN & SWIFT/BIC validator web utility.
International Bank Account (IBAN) & SWIFT/BIC Validator
DE89370400440532013000
DE89 3704 0044 0532 0130 00
About this tool
How to use it
- Type or paste your International Bank Account Number (IBAN) into the input field.
- Inspect the verified checksum, ISO 3166 country identity, expected character length, and SEPA zone eligibility.
- Copy the normalized compact electronic string or 4-character spaced print representation for invoices and wires.
- Switch to the 'Validate SWIFT / BIC' tab to parse and verify bank identifier codes (BIC) across 8 and 11-character formats.
Why it matters
Bank transfer errors and bounced wires caused by single-digit typos or incorrect check digits cost businesses and individuals time and hefty bank investigation fees. Instant client-side verification confirms payment coordinates before initiation.
When to use it
Use when onboarding foreign vendors, verifying SEPA cross-border wire routing, populating automated payroll entries, or double-checking international supplier invoice details without submitting sensitive banking data to remote servers.
Common questions
How does the IBAN validation algorithm work?
The tool implements the official ISO 13616 standard MOD-97 checksum algorithm. It transposes the leading country code and check digits to the end, converts letters into corresponding double-digit numbers (A=10 through Z=35), and verifies that the total integer modulus 97 equals exactly 1.
Are my bank account details sent to any external server?
No. All checksum calculations, format decompositions, and country validations occur 100% locally in your web browser. Zero financial data is ever transmitted over the network.
What is the difference between an 8-character and an 11-character SWIFT/BIC code?
An 8-character BIC specifies the institution's primary headquarters office. An 11-character BIC includes an additional 3-character alphanumeric branch code designating a specific regional branch or department.