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EAN Check Digit Calculator

Work out the check digit for a 12-digit EAN, or validate a full 13-digit EAN.

Quick answer: enter your details below and click Calculate — your result appears instantly, right here in your browser. Nothing you enter is uploaded or stored.
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How to use

  1. Type the 12 digits to complete, or all 13 digits to check.
  2. Click Calculate.
  3. Read the check digit, or whether the full EAN is valid.

About this tool

Enter the first 12 digits of an EAN and this tool calculates the 13th check digit using the standard EAN weighting, where alternate digits are multiplied by three. Enter all 13 digits instead and it checks whether the final digit matches the calculated one. Only digits are used, so spaces and dashes are ignored.

Frequently asked questions

What is a check digit for?

It is a final digit worked out from the others, so a mistyped digit is likely to make the whole number fail the check and get caught.

Does a valid check digit mean the product is real?

No. It only means the digits are internally consistent; it says nothing about whether the product exists.

Related tools

All tools · Read the guide: EAN Check Digit Calculator