Free Tool
GTIN Validator & Check Digit Calculator
Validate any GTIN or calculate the check digit for a new one. Supports GTIN-8, GTIN-12, GTIN-13, and GTIN-14.
Enter a GTIN-8, GTIN-12, GTIN-13, or GTIN-14 to validate.
The GS1 check digit uses a weighted sum algorithm (alternating x1 and x3 from right to left) to detect transcription errors. A single wrong digit will always be caught.
Have a valid GTIN? Generate a QR code for it.
Use our free QR code generator to create a GS1 Digital Link QR code from your GTIN — or sign up to host a live resolver that makes the code scannable.