Question 1

What is this barcode used for?

Accepted Answer

It is a standard retail barcode used to identify products at point of sale. It encodes a unique product identifier that barcode scanners can read instantly.

Question 2

How is the check digit calculated?

Accepted Answer

The check digit uses the standard weighted-sum algorithm: each digit is multiplied by alternating weights of 1 and 3, the products are summed, and the check digit rounds the total up to the next multiple of 10.

Question 3

Is this barcode valid for real products?

Accepted Answer

Barcodes generated here have correct structure and check digits, so they will scan. For commercial products you must use GS1-assigned prefixes.

Question 4

Can I print this barcode?

Accepted Answer

Yes. Export as SVG for unlimited resolution or PNG for quick use. Both formats are suitable for printing on labels and packaging.

Question 5

What is the difference between UPC and EAN?

Accepted Answer

UPC-A is a 12-digit barcode used in the US and Canada. EAN-13 is a 13-digit barcode used everywhere else. Modern scanners can read both.

Question 6

What do the UPC digits mean?

Accepted Answer

The first digit is the number system character, the next 5 digits identify the manufacturer, the following 5 digits identify the product, and the last digit is a check digit.

UPC Generator

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