Check Digit Embed Embed This Widget <script> tag <iframe> Theme Light Dark Sepia コピー コピーしました！ Widget powered by . Free, no account required. An error-detection digit calculated from the data using a mathematical algorithm such as Mod 10 or Mod 43. Applies To UPC-A UPC-E EAN-13 EAN-8 Code 39 Code 93 Code 128 Codabar (NW-7) ITF-14 GS1-128