GTIN converter

Convert between UPC, EAN, and GTIN formats in seconds. Use it for marketplace listings, ERP imports, and to see how GTIN and UPC differ across GS1-compatible systems.

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Popular conversions

GTIN vs UPC: quick explanation

UPC is a barcode format used mainly in North America. Its number is a GTIN-12. GTIN is the wider GS1 identifier system that includes GTIN-8, GTIN-12, GTIN-13, and GTIN-14.

When teams discuss “UPC vs EAN,” they are usually comparing the GTIN-12 and GTIN-13 forms of the same product 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 length of the number, not the product it identifies.
  • 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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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.