IBAN Checker

IBAN Checker | Validate & Verify IBAN Number Online

IBAN Validator

Check if an International Bank Account Number (IBAN) is valid using this free online checker.

IBAN Checker – Validate International Bank Account Numbers

The IBAN Checker lets you instantly validate whether an International Bank Account Number (IBAN) is correctly formatted before using it for an international wire transfer. This helps prevent failed or delayed transactions caused by typos or incorrect formatting when sending or receiving money from banks in Europe, the Middle East, and other IBAN-using countries.

How to Use the IBAN Checker

  1. Enter the full IBAN (including the two-letter country code and check digits) into the input field.
  2. Click Check or Validate IBAN.
  3. The tool will confirm whether the IBAN is structurally valid and, where supported, display the country and expected length.

Formula Used

IBAN validation uses the internationally standardized MOD-97 checksum algorithm:

  1. Move the first four characters of the IBAN to the end.
  2. Convert all letters to numbers (A=10, B=11, ... Z=35).
  3. Treat the resulting string as one large number and check if it gives a remainder of 1 when divided by 97.

If the remainder equals 1, the IBAN is considered valid.

Worked Example

Take the sample IBAN: DE89 3704 0044 0532 0130 00

Rearranged and converted per the MOD-97 rule, this IBAN passes the checksum test, confirming it is a validly formatted German IBAN. If even one digit were changed, the checksum would fail, and the tool would flag it as invalid.

Practical Context: Why IBAN Validation Matters for Indian Users

While India uses IFSC codes rather than IBANs domestically, many Indians dealing with international freelance clients, NRI relatives abroad, or businesses receiving payments from European or Gulf-based clients need to enter IBANs correctly for wire transfers via SWIFT. A single incorrect digit in an IBAN can cause a transfer to bounce back or get delayed by days, so validating it before submission saves time and avoids unnecessary bank fees.

Frequently Asked Questions

Q1. Does India use IBAN numbers?
No, India uses IFSC codes with account numbers for domestic transfers; IBAN is used mainly by European, Middle Eastern, and some other countries for international banking.

Q2. Does a valid IBAN checksum guarantee the account exists?
No, it only confirms the IBAN is structurally correct — it does not verify that the account is active or that the account holder's name matches.

Q3. What does the two-letter code at the start of an IBAN mean?
It represents the country code, such as DE for Germany, GB for the United Kingdom, or AE for the UAE.

Q4. Can I use this tool for SWIFT/BIC code validation too?
No, this tool is specifically for IBAN format validation; SWIFT/BIC codes use a different structure and validation method.