EAN-13 vs UPC-A: Choosing the Right Retail Barcode
They look almost identical and are closely related. Here is what actually separates EAN-13 from UPC-A and when to use each.
A shared family
EAN-13 and UPC-A are part of the same global standard. UPC-A is essentially a twelve-digit subset of the thirteen-digit EAN-13 scheme; modern scanners read both without complaint.
The practical difference is geography and digit count, not technology.
Digits and regions
- •UPC-A: 12 digits, the traditional retail barcode in the United States and Canada.
- •EAN-13: 13 digits, the international standard used across most of the world.
- •An EAN-13 that begins with a zero is, in effect, a UPC-A.
The check digit
Both formats end with a check digit computed from the preceding numbers. A good generator calculates it for you, but you should still verify the full code against your product master data, a single transposed digit points to the wrong product.
Which to choose
If you sell internationally or outside North America, EAN-13 is the safe default. If your market is strictly the US and Canada and a retailer specifically asks for UPC-A, use that.
Either way, the underlying number must come from GS1; a generator only renders it.
Print considerations
Keep the standard proportions, leave quiet zones on both ends, and do not shrink below the size your retailer specifies. Retail scanners are fast but unforgiving of distorted symbols.