Free EAN/UPC Check Digit Calculator Online
Use this free EAN/UPC check digit calculator to compute and verify barcode check digits. Fast, private, and works in your browser.
What is EAN/UPC Check Digit Calculator?
EAN/UPC Check Digit Calculator computes the final check digit for EAN-13, EAN-8, and UPC-A barcodes, and can verify whether an existing number is valid. It is useful for product data and inventory systems. The math runs in your browser.
How to use this tool
- Choose the barcode type.
- Enter the digits without the check digit (or the full number to verify).
- Read the calculated check digit or validation result.
Features
- Compute the EAN-13, EAN-8, and UPC-A check digit
- Verify an existing barcode number
- Clear valid/invalid result
- Copy the full number
- Runs entirely in your browser
This tool runs in your browser. Your files and text are not uploaded to our servers, and we do not store your input.
Frequently asked questions
What is a check digit?+
It is the last digit of a barcode, calculated from the others to catch typing errors.
Can it verify a full number?+
Yes. Enter the complete number and the tool tells you whether the check digit is valid.
Is anything uploaded?+
No. The calculation happens entirely in your browser.
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