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Use our check digit calculator below to calculate a check digit. What is a check digit? The last digit of all fixed-length, numeric GS1 Identification Keys is a check digit that ensures the integrity of the key. All GS1 ID Keys need a check digit, except Component/Part Identifier (CPID) and Global Individual Asset Identifier (GIAI).
Here you can learn how to compute check digits for UPC-a barcode, see the maths and get the digit computed for your data.
Use GS1's UPC check digit calculator to confirm the integrity of your barcode number.
Utilise GS1 Australia's Check Digit Calculator for accurate GTIN generation to ensure data integrity and compliance with GS1 standards for barcode encoding.
The following calculation can be used to create the check digit for all the GS1 Identification Keys that require them, including GTINs and GLNs. Let’s take the GTIN 501234567890C as an example, where C is the check digit.
This page provides information for each GS1 ID Key, shows how the calculator works and even provides you step by step instructions on how to manually calculate the check digit by using the simple algorithm, should the need arise.
A 100% free barcode check digit calculator and validator. Simple to use. Free for life. ️Generate Barcode Check Digits ️Validate Barcodes ️Single barcode and bulk mode
