AnyTools
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IBAN Validator & Parser

Validate IBAN numbers instantly and surface every structural detail before you approve or reject a transfer.

Practical Guide
Input
Examples
German IBAN
DE89 3704 0044 0532 0130 00
French IBAN
FR14 2004 1010 0505 0001 3M02 606
British IBAN
GB29 NWBK 6016 1331 9268 19
Spanish IBAN
ES91 2100 0418 4502 0005 1332

❓What is IBAN and Parsing Principles

IBAN (International Bank Account Number) is a standardized format for identifying bank accounts internationally, defined by ISO 13616 standard. It consists of a two-letter country code, two check digits, and up to 30 alphanumeric characters representing bank and account information. The parsing principle involves three key validation steps: format validation (country-specific structure), character conversion (letters A-Z to numbers 10-35), and checksum verification using the modulo-97 algorithm. The IBAN structure varies by country but follows the pattern: Country Code (2) + Check Digits (2) + Bank Identifier + Account Number. Parsing algorithms validate the integrity by converting the entire IBAN to numeric format, performing modulo-97 division, and ensuring the remainder equals 1. This mathematical verification prevents transcription errors and ensures accurate international fund transfers. IBAN parsing is essential for SEPA payments, international wire transfers, and cross-border banking operations, providing a unified system for global financial transactions while maintaining high accuracy and security standards.

✨Features

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ISO 13616 Compliant IBAN Validation

Validates IBAN format according to international ISO 13616 standard using mod-97 checksum algorithm. Verifies country code (2 letters), check digits (2 numbers), and basic bank account number (BBAN) structure. Detects invalid checksums, incorrect lengths, unsupported countries, and malformed account numbers instantly.
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Complete IBAN Structure Parsing and Extraction

Extracts and displays all IBAN components: country code (e.g., DE for Germany), 2-digit check number for validation, bank identifier code (BIC/SWIFT compatible), branch code (if applicable), and account number. Shows formatted IBAN with 4-character grouping (DE89 3704 0044 0532 0130 00) for readability.
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80+ Countries SEPA and Worldwide Support

Supports all SEPA countries (EU, EEA, Switzerland) and 80+ global jurisdictions with IBANs including Middle East, Caribbean, and Latin America. Validates country-specific formats: Germany (22 chars), France (27 chars), UK (22 chars), Spain (24 chars), Italy (27 chars), with accurate BBAN structure verification.
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Real-Time Validation with Detailed Error Reporting

Instant validation as you type with specific error messages: checksum mismatch, invalid country code, incorrect length for country, invalid characters (only A-Z, 0-9 allowed), malformed BBAN structure. Provides correction suggestions and displays example valid IBANs for reference during data entry and verification.

🎯Application Scenarios

Payment Processing and Banking

Validate IBANs before processing international payments, wire transfers, and SEPA transactions. Ensure account numbers are correctly formatted and prevent payment errors, essential for financial institutions, payment processors, and e-commerce platforms handling international transactions.

Account Verification and Onboarding

Verify bank account details during customer onboarding, KYC (Know Your Customer) processes, and account setup. Parse IBAN components to extract bank and account information for automated account verification and compliance checks.

Financial Data Management

Parse and validate IBANs in financial databases, ERP systems, and accounting software. Extract structured bank account information for reporting, reconciliation, and financial data analysis. Essential for treasury management and financial operations.

Compliance and Audit

Validate IBAN format and checksums for compliance with international banking standards (ISO 13616). Ensure payment data integrity, prevent fraud, and maintain audit trails for financial transactions. Critical for regulatory compliance and financial security.

📚Practical Guide

IBAN standard and structure

IBAN (International Bank Account Number) is the ISO 13616 standard for encoding cross-border account numbers. It combines a two-letter country code, two check digits, and a Basic Bank Account Number of up to 30 alphanumeric characters that encapsulate bank and branch information, making international routing unambiguous.

MOD-97 checksum workflow

Validation reorders the string, converts letters to their numeric equivalents (A=10 … Z=35), and performs a modulo 97 division. A remainder of 1 confirms integrity; generating check digits reverses the process by inserting 00, repeating the conversion, and subtracting the remainder from 98.

Parsing outputs for operations

Beyond a simple yes/no, the parser returns country metadata, BIC/SWIFT aligned bank and branch identifiers, account numbers, and both electronic and human-friendly formats. These insights feed compliance checks, treasury workflows, and automated payment pipelines.

💬Frequently Asked Questions

❓What is an IBAN and what does it contain?
IBAN (International Bank Account Number) is an ISO 13616 standard format for identifying bank accounts internationally. It contains: a 2-letter country code, 2 check digits (MOD-97 validation), and a Basic Bank Account Number (BBAN) up to 30 alphanumeric characters that includes bank identifier, branch code, and account number.
💬How does IBAN validation work?
IBAN validation involves: checking format and length according to country-specific rules, reordering the string (moving first 4 characters to end), converting letters to numbers (A=10, B=11, ..., Z=35), performing MOD-97 division, and verifying the remainder equals 1. The tool also validates country-specific structure and length requirements.
🔍Which countries use IBAN?
IBAN is used in over 80 countries, primarily in Europe, Middle East, and parts of Africa and Asia. Each country has a specific IBAN length and format. Major users include all EU countries, UK, Switzerland, Norway, and many others. The tool supports validation for all official IBAN formats.
💡What information can I extract from a valid IBAN?
From a valid IBAN, you can extract: country code (first 2 letters), check digits (positions 3-4), bank identifier (varies by country), branch code (if applicable), and account number. The tool displays all parsed components in a structured format for easy understanding.
📚Is IBAN validation sufficient for verifying bank account details?
IBAN validation confirms the format and checksum are correct, but it does not verify that the account actually exists or is active. For actual payments, you should use additional verification methods provided by banks or payment processors. IBAN validation is the first step in ensuring correct account number format.

💡How to Use

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Normalize inputs

Strip whitespace, unify casing, and remove non-alphanumeric characters so every IBAN enters the validator in a consistent format.
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Recompute checksums

Run an independent MOD-97 calculation to cross-verify the control digits whenever you onboard new data sources or partners.
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Audit parsed metadata

Compare the extracted bank and branch identifiers with your trusted registry or AML lists before accepting the account.
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Archive results

Store the normalized IBAN, formatted display value, and validation status in your logs or ERP to simplify future reconciliations.

🔗Related Documents

📖ISO 13616 - IBAN StandardInternational standard for IBAN structure and validation algorithms
🏦SWIFT - IBAN RegistryOfficial IBAN registry with country-specific formats and validation rules
📋IBAN Structure DocumentationDetailed documentation on IBAN format, check digits calculation, and country codes
🔢IBAN Check Digit AlgorithmMod-97 algorithm for IBAN check digit calculation and validation
🌍IBAN Country ListComplete list of IBAN formats for all participating countries with examples

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