GTIN
Colloquially, many know GTIN as a barcode, but technically, GTIN is the number found beneath the barcode symbol itself, and can therefore also be used for other technologies such as 2D barcodes and RFID tags.
Colloquially, many know GTIN as a barcode, but technically, GTIN is the number found beneath the barcode symbol itself, and can therefore also be used for other technologies such as 2D barcodes and RFID tags.
The last digit of all GS1 numbers is a check digit.
The check digit is calculated based on the preceding digits. It is used to verify both the GS1 number and the barcode.
Therefore, it is important that the check digit is correct – otherwise, the barcode cannot be read.
How is a check digit calculated?
Check digits are calculated using the Modulus-10 algorithm.
Should I enter the number with or without a check digit?
You must enter your number without the check digit to perform the calculation.
You can enter 7, 11, 12, 13, and 17 digits into the calculator, corresponding to UPC, GTIN-8, GTIN-13, GTIN-14, and SSCC.
What is the difference between a number and a barcode?
The number identifies your product, for example. The barcode allows a scanner to read the encoded information.
Does a correct check digit mean the number is valid?
It means that the last digit matches the calculation. It does not show whether the number has been assigned correctly.
How do I create a barcode from my number?
In GS1Trade Activate, you can generate barcodes for your products and shipments. Choose a barcode type that suits your application.
Do you need to use the number as a barcode? Create your barcode in GS1Trade Activate →
If you have additional or other questions about our standards and services, you may find the answers below. You are, of course, always welcome to contact us directly.
