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UPC / EAN / GTIN Check Digit Calculator
Compute the GS1 Mod 10 check digit for any UPC-A, EAN-13, EAN-8, or ITF-14 input. Paste the first 11/12/7/13 digits, get the check digit instantly.
Want to understand how the math works? Read the full GS1 Mod 10 explainer with worked examples. Or jump to the UPC-A generator to render the barcode.