TINP check digit calculator
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Overview
The last digit of the TINP format is a check digit. Calculation is the same as for GS1 GTIN/EAN/UPC check digits.
GS1 check digit calculator
A GS1 check digit calculator and detailed documentation is online at GS1's website. http://gs1.org
Tango.info TINP check digit calculator
- https://tango.info/x/php/tools/checkdigit.php - give 13 digits without the last, then the form returns 14 digits.