What is ISO 7064?

ISO 7064 is an international standard that defines algorithms for calculating check characters and check digits. These checksums are used to detect errors in data entry and transmission. The standard provides several different algorithms, including ISO 7064 MOD 97 and ISO 7064 MOD 97-10 for numeric data, as well as MOD 11-2 for alphanumeric strings. These check digit algorithms help verify the integrity of identification numbers like IBANs, credit card numbers, and other codes by catching transcription errors, transposed digits, and other common mistakes.

Tool Description

This ISO 7064 calculator computes checksums according to the ISO 7064 standard. It takes any alphanumeric input string and generates a check character that can be used to validate the integrity of the data. The tool automatically converts input to uppercase and applies the MOD 11-2 algorithm to calculate the checksum. While MOD 97 and MOD 97-10 variants are commonly used for purely numeric sequences like IBAN validation, this calculator focuses on alphanumeric data processing.

Features

  • Automatic Checksum Calculation: Computes ISO 7064 checksums in real-time as you type
  • Alphanumeric Support: Works with both letters and numbers
  • Case Insensitive: Automatically converts input to uppercase
  • Instant Validation: Displays results immediately with error handling
  • Copy-Ready Output: Easily copy the calculated checksum for use in your applications

Use Cases

  • IBAN Validation: Calculate check digits for International Bank Account Numbers
  • Data Integrity: Verify identification numbers and reference codes
  • Error Detection: Add checksums to custom alphanumeric identifiers
  • Payment Processing: Validate credit card numbers and payment references
  • Database Records: Generate check digits for unique identifiers
  • Document Management: Add error detection to document reference numbers