EAN / UPC / GTIN Check Digit
Validate or calculate the GS1 check digit in bulk: GTIN-8/12/13/14, SSCC-18, GLN-13
gs1-mod10v1.0.0GS1 General Specifications — standard check digit calculation for GS1 data structures (mod 10, 3/1 weighting anchored at the rightmost payload digit), applied to GTIN-8/12/13/14, SSCC and GLN
Workspace
Local or server · same path as API
life/ean-upc-gtinOperation
Type
0 characters
Paste one code or a whole column — the verdict appears as you type.
A correct check digit means the number is well formed. It does not mean GS1 ever assigned it to a real product, company or location — only a GEPIR registry lookup answers that.
API
forge.life.ean_upc_gtinSame contract as the page. Use an authenticated key in production.
curl -X POST 'https://forge.nebutra.com/v1/tools/life/ean-upc-gtin/invoke' \
-H 'Authorization: Bearer sk-sailor-…' \
-H 'Content-Type: application/json' \
-d '{
"example": true
}'