Question 1

What is a UPC-A barcode?

Accepted Answer

UPC-A is the standard retail product barcode used in the US and Canada. It contains 12 digits: a company prefix, product number, and check digit.

Question 2

How many digits does UPC-A have?

Accepted Answer

UPC-A has 12 digits. Enter 11 digits and the 12th check digit is calculated automatically.

Question 3

What is the difference between UPC-A and EAN-13?

Accepted Answer

UPC-A has 12 digits and is used primarily in North America. EAN-13 has 13 digits and is the international standard. A UPC-A can be read as EAN-13 by adding a leading zero.

Question 4

Do I need an official number for retail use?

Accepted Answer

Yes. For selling products through major retailers or marketplaces, you typically need a GS1-assigned company prefix. This tool generates the barcode image but does not assign an official product number.

Question 5

How is the UPC-A check digit calculated?

Accepted Answer

Multiply odd-position digits by 3 and even-position digits by 1, sum all products, then compute (10 − sum mod 10) mod 10. The generator calculates this automatically.

UPC-A Barcode Generator

Related Tools

Frequently Asked Questions