Container reference desk

    Free tools for container professionals

    Check container numbers and decode ISO size and type codes.

    Container number checker

    Validate an ISO 6346 check digit, calculate the missing digit or check a list of up to 1,000 numbers.

    Check a number

    ISO size and type code decoder

    Read the length, height and type behind codes such as 22G1, 45G1 and L5G1.

    Decode a code