Free tool

Confirm a barcode is valid.

A UPC identifies your release as a product. This checker runs the real mod-10 check-digit math so you can confirm a code is well formed.

How it works

The last digit is not random.

The final digit of a UPC is a checksum derived from the other eleven. If it does not match, the barcode is mistyped or invalid. That is the exact calculation this tool performs.

One barcode per release, handled.

HypaLabs assigns a UPC when you need one, so your release is identified as a product everywhere it ships.

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