GTIN Converter

Convert between UPC, EAN, and GTIN formats in seconds. This is useful for marketplaces, ERP imports, and understanding GTIN vs UPC differences across GS1-compatible systems.

Value to convert:

Result:

Popular conversions

Convert UPC to EAN: prefix UPC-A with a leading zero to create EAN-13.
GTIN-12 to GTIN-14: add two leading zeros for systems that require 14-digit keys.
EAN-13 to UPC-A: possible only when the EAN starts with 0.

GTIN vs UPC: quick explanation

UPC is a barcode format used primarily in North America and is represented as GTIN-12. GTIN is the broader GS1 identifier framework that includes GTIN-8, GTIN-12, GTIN-13, and GTIN-14.

When teams discuss “UPC vs EAN,” they are usually comparing GTIN-12 and GTIN-13 representations of the same product identity in different retail systems.

For logistics labels and some B2B feeds, GTIN-14 is often required even when your source catalog stores UPC-A values.

Practical conversion notes

Adding leading zeros changes the representation length, not the underlying product identity.
Converting EAN-13 to UPC-A is only valid when the EAN-13 starts with 0.
If a marketplace rejects a converted code, confirm the expected format field (UPC, EAN, or GTIN) in that channel.
Keep one normalized “master” format in your database to avoid repeated conversion drift.

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Learn more

What Is a GTIN? UPC, EAN & GS1 Barcode Standards

A GTIN is the GS1 Global Trade Item Number that sits above UPC, EAN and the 14-digit case code as one shared product identifier.

UPC vs EAN vs GTIN: What Is the Difference

UPC is not an alternative to GTIN. A UPC-A barcode carries a 12-digit GTIN-12, so UPC is one member of the wider GTIN family.

GTIN-14 Explained: Cases, Cartons & Pallets

GTIN-14 identifies a packaging level such as a case or carton by adding an indicator digit in front of the base product GTIN.

UPC-A vs UPC-E: Format, Length & Check Digit

How UPC-E compresses a 12-digit UPC-A into 8 digits, and why they share a check digit.