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Check Digit Calculator For Shipping Containers

What is a shipping container check digit?

A shipping container check digit is a part of the unique code on the side of every shipping container. It is used to make sure that the container number was correctly transferred or recorded for container tracking. If one of the other numbers in the code is incorrect, you can find out using the check digit.

What are the letters and numbers in a shipping container code?

The different parts of a shipping container number

The first 4 letters: These letters are the owner code. They identify the origin of the container.
The next 6 numbers: These letters are the container number. These are decided by the owner of the container.
The last number: This is the check digit. It is calculated using the other numbers in the code and used to verify the integrity of the other numbers.

How to use this tool:

  1. 1. Enter your container code into the box below
  2. 2. You may enter multiple codes at a time
  3. 3. If you don't have a check digit, this tool will tell you what the check digit is
  4. 4. If you do have the check digit, this tool will tell you if it is correct.

Enter your container number(s):