UPC vs EAN vs GTIN: What's the Difference?

If you work in e-commerce, you've encountered UPC, EAN, and GTIN codes. While they're all product identifiers, they serve different purposes and have different formats. Let's clear up the confusion once and for all.

UPC (Universal Product Code)

The UPC is a 12-digit barcode standard used primarily in the United States and Canada. It was introduced in 1974 and is the most widely recognized barcode format in North America.

Format: 12 digits
Region: US & Canada (primarily)
Example: 012345678905
Used by: Retailers, manufacturers, and distributors in North America

EAN (European Article Number)

The EAN is a 13-digit barcode standard used internationally. It's the global counterpart to the UPC and is managed by GS1, the same organization behind UPC.

Format: 13 digits
Region: Global (dominant outside North America)
Example: 0012345678905
Used by: Retailers and manufacturers worldwide

GTIN (Global Trade Item Number)

GTIN is an umbrella term that encompasses both UPC and EAN, plus other formats. It's the standardized way to refer to any product identifier in the GS1 system.

GTIN-8: 8 digits (for small packages)
GTIN-12: 12 digits (same as UPC)
GTIN-13: 13 digits (same as EAN)
GTIN-14: 14 digits (for case/carton-level identification)

The Relationship Between Them

Here's the key insight: a UPC is just an EAN with a leading zero. The UPC "012345678905" is identical to the EAN "0012345678905". They refer to the same product.

GTIN-12 = UPC GTIN-13 = EAN

Which Should You Use?

Selling in North America only? UPC is sufficient.
Selling internationally? Use EAN/GTIN-13.
Building a database? Store GTIN-13 (EAN) as your canonical identifier — you can always derive the UPC by removing the leading zero.
Using APIs? EcomSource returns all three formats for every product, so you never have to worry about conversion.

Why This Matters for Amazon Sellers

Creating new listings
Matching products across marketplaces
Brand registry verification
Inventory management across channels

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Queries already finding EcomSource on Google (Search Console)

These are real searches where ecomsource.ai already earns impressions — prioritize the same topics in your tooling and content:

asin to upc api — 139 impressions
b2b data api — 121 impressions
difference between gtin and ean gtin-13 ean-13 — 1 impressions
gtin vs upc — 43 impressions
gtin-12 vs gtin-13 difference upc ean — 1 impressions
what's the difference between a gtin and a regular barcode number? — 1 impressions
difference between gtin and upc — 6 impressions
what is gcid upc or ean — 16 impressions
difference between upc and gtin — 1 impressions
are gtin and upc the same — 1 impressions

Related searches: UPC, barcode & product identifier keywords

This section expands on UPC vs EAN vs GTIN: What's the Difference? with search terms sellers and developers use — including queries from Google Search Console and our keyword research. Whether you need asin to upc api, product data api, gtin vs upc, b2b data api, or bulk barcode lookup, the workflows below connect to EcomSource tools.

Upc lookup

Upc lookup is one of the highest-intent searches in product data — and it is exactly what this guide on *UPC vs EAN vs GTIN* helps you solve. Sellers and developers use upc lookup to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run upc lookup free on the web, via [Chrome Extension](https://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb)Chrome Extensionhttps://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb, or through our barcode lookup API/gtin-lookup across 1.6B+ indexed products.

Upc finder

Upc finder is one of the highest-intent searches in product data — and it is exactly what this guide on *UPC vs EAN vs GTIN* helps you solve. Sellers and developers use upc finder to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run upc finder free on the web, via [Chrome Extension](https://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb)Chrome Extensionhttps://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb, or through our barcode lookup API/gtin-lookup across 1.6B+ indexed products.

Upc code lookup

Upc code lookup is one of the highest-intent searches in product data — and it is exactly what this guide on *UPC vs EAN vs GTIN* helps you solve. Sellers and developers use upc code lookup to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run upc code lookup free on the web, via [Chrome Extension](https://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb)Chrome Extensionhttps://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb, or through our barcode lookup API/gtin-lookup across 1.6B+ indexed products.

Upc code

Upc code is one of the highest-intent searches in product data — and it is exactly what this guide on *UPC vs EAN vs GTIN* helps you solve. Sellers and developers use upc code to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run upc code free on the web, via [Chrome Extension](https://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb)Chrome Extensionhttps://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb, or through our barcode lookup API/gtin-lookup across 1.6B+ indexed products.

Search for upc

Search for upc is one of the highest-intent searches in product data — and it is exactly what this guide on *UPC vs EAN vs GTIN* helps you solve. Sellers and developers use search for upc to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run search for upc free on the web, via [Chrome Extension](https://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb)Chrome Extensionhttps://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb, or through our barcode lookup API/gtin-lookup across 1.6B+ indexed products.

Go upc

Go upc is one of the highest-intent searches in product data — and it is exactly what this guide on *UPC vs EAN vs GTIN* helps you solve. Sellers and developers use go upc to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run go upc free on the web, via [Chrome Extension](https://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb)Chrome Extensionhttps://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb, or through our barcode lookup API/gtin-lookup across 1.6B+ indexed products.

Upc codes

Upc codes is one of the highest-intent searches in product data — and it is exactly what this guide on *UPC vs EAN vs GTIN* helps you solve. Sellers and developers use upc codes to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run upc codes free on the web, via [Chrome Extension](https://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb)Chrome Extensionhttps://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb, or through our barcode lookup API/gtin-lookup across 1.6B+ indexed products.

Upc product code

Upc product code is one of the highest-intent searches in product data — and it is exactly what this guide on *UPC vs EAN vs GTIN* helps you solve. Sellers and developers use upc product code to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run upc product code free on the web, via [Chrome Extension](https://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb)Chrome Extensionhttps://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb, or through our barcode lookup API/gtin-lookup across 1.6B+ indexed products.

Upc product

Upc product is one of the highest-intent searches in product data — and it is exactly what this guide on *UPC vs EAN vs GTIN* helps you solve. Sellers and developers use upc product to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run upc product free on the web, via [Chrome Extension](https://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb)Chrome Extensionhttps://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb, or through our barcode lookup API/gtin-lookup across 1.6B+ indexed products.

Ean code product

Searchers looking for ean code product usually need fast, accurate product identification — not a generic description. EcomSource supports this query as part of unified UPC, EAN, GTIN, and ISBN lookup/gtin-lookup with Amazon catalog mapping, variation trees, and bulk batch endpoints.

Product ean code

Searchers looking for product ean code usually need fast, accurate product identification — not a generic description. EcomSource supports this query as part of unified UPC, EAN, GTIN, and ISBN lookup/gtin-lookup with Amazon catalog mapping, variation trees, and bulk batch endpoints.

Universal product code lookup

Searchers looking for universal product code lookup usually need fast, accurate product identification — not a generic description. EcomSource supports this query as part of unified UPC, EAN, GTIN, and ISBN lookup/gtin-lookup with Amazon catalog mapping, variation trees, and bulk batch endpoints.

Terminology & search intent reference

Understanding *why* a query matters helps you pick the right tool. High-volume navigational searches like upc lookup (22K+), upc code lookup (15K+), and barcode lookup (12K+) expect an instant free tool. Commercial queries such as barcode lookup api, upc api, and bulk barcode lookup expect documentation, pricing, and batch endpoints — all available on EcomSource.

Search term	Google impressions	Semrush vol. (est.)	Intent
asin to upc api	139	—	GSC
b2b data api	121	—	GSC
difference between gtin and ean gtin-13 ean-13	1	—	GSC
gtin vs upc	43	—	GSC
gtin-12 vs gtin-13 difference upc ean	1	—	GSC
what's the difference between a gtin and a regular barcode number?	1	—	GSC
difference between gtin and upc	6	—	GSC
what is gcid upc or ean	16	—	GSC
difference between upc and gtin	1	—	GSC
are gtin and upc the same	1	40	Informational
is gtin and upc the same	1	—	GSC
b2b api	52	—	GSC
upc vs ean vs gtin differences for selling products online 2025 or 2026	11	—	GSC
upc vs ean vs gtin for selling products online differences how to choose	11	—	GSC
upc code	36	12.1K	Informational
product data api	36	—	GSC
is gtin same as upc	20	—	GSC
gtin and upc	5	—	GSC
what is product upc code	—	720	Informational
go upc	—	3.6K	Navigational

Additional long-tail searches in this topic cluster

gtin lookup
gtin search
search gtin
gtin check digit
gtin-14
gtin vs ean
gtin database
gtin look up
ean lookup
ean universal
ean search
what is an ean
ean code check digit
upc code search
upcitemdb

Free lookup tools on EcomSource.ai

[GTIN lookup tools](/gtin-lookup)
[EAN lookup tools](/ean-lookup)
[UPC lookup tools](/upc-lookup)
[COMPARE lookup tools](/barcode-lookup)
[API lookup tools](/product-data-api)

[All guides & blog posts](/blogs)
[API documentation](/docs)
[Pricing for high-volume barcode lookup](/pricing)

Frequently asked questions

Difference between gtin and ean gtin-13 ean-13?

Searchers looking for difference between gtin and ean gtin-13 ean-13 usually need fast, accurate product identification — not a generic description. EcomSource supports this query as part of unified UPC, EAN, GTIN, and ISBN lookup/gtin-lookup with Amazon catalog mapping, variation trees, and bulk batch endpoints. Use the free search on [ecomsource.ai](https://www.ecomsource.ai)ecomsource.aihttps://www.ecomsource.ai or read the related sections above for step-by-step workflows tied to Education.

Gtin-12 vs gtin-13 difference upc ean?

Searchers looking for gtin-12 vs gtin-13 difference upc ean usually need fast, accurate product identification — not a generic description. EcomSource supports this query as part of unified UPC, EAN, GTIN, and ISBN lookup/gtin-lookup with Amazon catalog mapping, variation trees, and bulk batch endpoints. Use the free search on [ecomsource.ai](https://www.ecomsource.ai)ecomsource.aihttps://www.ecomsource.ai or read the related sections above for step-by-step workflows tied to Education.

Difference between gtin and upc?

Searchers looking for difference between gtin and upc usually need fast, accurate product identification — not a generic description. EcomSource supports this query as part of unified UPC, EAN, GTIN, and ISBN lookup/gtin-lookup with Amazon catalog mapping, variation trees, and bulk batch endpoints. Use the free search on [ecomsource.ai](https://www.ecomsource.ai)ecomsource.aihttps://www.ecomsource.ai or read the related sections above for step-by-step workflows tied to Education.

What is gcid upc or ean?

Searchers looking for what is gcid upc or ean usually need fast, accurate product identification — not a generic description. EcomSource supports this query as part of unified UPC, EAN, GTIN, and ISBN lookup/gtin-lookup with Amazon catalog mapping, variation trees, and bulk batch endpoints. Use the free search on [ecomsource.ai](https://www.ecomsource.ai)ecomsource.aihttps://www.ecomsource.ai or read the related sections above for step-by-step workflows tied to Education.

Difference between upc and gtin?

Searchers looking for difference between upc and gtin usually need fast, accurate product identification — not a generic description. EcomSource supports this query as part of unified UPC, EAN, GTIN, and ISBN lookup/gtin-lookup with Amazon catalog mapping, variation trees, and bulk batch endpoints. Use the free search on [ecomsource.ai](https://www.ecomsource.ai)ecomsource.aihttps://www.ecomsource.ai or read the related sections above for step-by-step workflows tied to Education.

Are gtin and upc the same?

Searchers looking for are gtin and upc the same usually need fast, accurate product identification — not a generic description. EcomSource supports this query as part of unified UPC, EAN, GTIN, and ISBN lookup/gtin-lookup with Amazon catalog mapping, variation trees, and bulk batch endpoints. Use the free search on [ecomsource.ai](https://www.ecomsource.ai)ecomsource.aihttps://www.ecomsource.ai or read the related sections above for step-by-step workflows tied to Education.

Is gtin and upc the same?

Searchers looking for is gtin and upc the same usually need fast, accurate product identification — not a generic description. EcomSource supports this query as part of unified UPC, EAN, GTIN, and ISBN lookup/gtin-lookup with Amazon catalog mapping, variation trees, and bulk batch endpoints. Use the free search on [ecomsource.ai](https://www.ecomsource.ai)ecomsource.aihttps://www.ecomsource.ai or read the related sections above for step-by-step workflows tied to Education.

Upc vs ean vs gtin differences for selling products online 2025 or 2026?

Searchers looking for upc vs ean vs gtin differences for selling products online 2025 or 2026 usually need fast, accurate product identification — not a generic description. EcomSource supports this query as part of unified UPC, EAN, GTIN, and ISBN lookup/gtin-lookup with Amazon catalog mapping, variation trees, and bulk batch endpoints. Use the free search on [ecomsource.ai](https://www.ecomsource.ai)ecomsource.aihttps://www.ecomsource.ai or read the related sections above for step-by-step workflows tied to Education.

Upc vs ean vs gtin for selling products online differences how to choose?

Searchers looking for upc vs ean vs gtin for selling products online differences how to choose usually need fast, accurate product identification — not a generic description. EcomSource supports this query as part of unified UPC, EAN, GTIN, and ISBN lookup/gtin-lookup with Amazon catalog mapping, variation trees, and bulk batch endpoints. Use the free search on [ecomsource.ai](https://www.ecomsource.ai)ecomsource.aihttps://www.ecomsource.ai or read the related sections above for step-by-step workflows tied to Education.

Product data api?

Product data api is one of the highest-intent searches in product data — and it is exactly what this guide on *UPC vs EAN vs GTIN* helps you solve. Sellers and developers use product data api to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run product data api free on the web, via [Chrome Extension](https://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb)Chrome Extensionhttps://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb, or through our barcode lookup API/gtin-lookup across 1.6B+ indexed products. Use the free search on [ecomsource.ai](https://www.ecomsource.ai)ecomsource.aihttps://www.ecomsource.ai or read the related sections above for step-by-step workflows tied to Education.

Step-by-step: run your first lookup after reading this guide

1Copy a UPC, EAN, GTIN, ISBN, or ASIN from packaging or your supplier sheet.
2Open [ecomsource.ai](/) or a dedicated tool page ([UPC lookup](/upc-lookup), [barcode lookup](/barcode-lookup), [GTIN](/gtin-lookup), [ISBN](/isbn-lookup)).
3Paste the code and search — results include brand, title, images, and Amazon identifiers.
4For lists of 20+ codes, use [bulk barcode lookup](/bulk-barcode-lookup) via the API ([docs](/docs)).
5Pin the [Chrome Extension](https://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb) for on-page Amazon/Walmart lookups.

Why EcomSource for barcode & UPC data

Competitors excel at single-purpose pages; EcomSource combines free online lookup, Amazon-native ASIN mapping, variation intelligence, and real-time bulk barcode lookup in one platform. If you are outgrowing BarcodeLookup pricing, Go-UPC email bulk turnaround, or EAN-Search rate limits, start with a free account/signup and run your first asin to upc api in seconds.

Try free UPC & barcode lookup →/

Get API keys for bulk search →/signup