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.
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.