GTIN vs UPC: Understanding the Key Differences and How to Use Them
GTIN and UPC are the backbone of product identity. This guide clarifies how they differ, how barcodes use them, and how to obtain compliant identifiers for your catalog.
Table of Contents
- 1. Introduction
- 2. What Is a GTIN?
- 3. Key Characteristics of GTIN
- 4. Types of GTINs
- 5. What Is a UPC?
- 6. Key Characteristics of UPC
- 7. GTIN vs UPC: The Differences
- 8. Why GTIN and UPC Matter
- 9. GTINs and Barcodes
- 10. How to Obtain GTINs and UPCs
- 11. Pricing Overview (GS1 US)
- 12. Common Questions
- 13. Best Practices
- Conclusion
1) Introduction
In retail and e-commerce, product identity is non-negotiable. Accurate identifiers reduce listing errors, speed up inventory workflows, and improve customer experience.
GTIN and UPC are often mentioned together, but they are not identical. Understanding how they relate helps you choose the right identifiers and barcode formats for each market.
2) What Is a GTIN?
GTIN stands for Global Trade Item Number. It is a globally unique identifier used to distinguish trade items, products, or services worldwide.
GTINs are managed by GS1, the global standards organization that ensures each product has a unique number recognized by retailers and platforms across countries.
3) Key Characteristics of GTIN
- GTINs are numeric codes that can be 8, 12, 13, or 14 digits long.
- They are the underlying data for barcodes scanned at POS, warehouses, and e-commerce platforms.
- GTINs are used worldwide to support global trade, inventory tracking, and supply chain management.
- They can be encoded into multiple barcode symbologies, including UPC, EAN, ITF-14, and GS1 DataBar.
4) Types of GTINs
| GTIN Type | Digits | Primary Region | Common Use Case | Barcode Symbology |
|---|---|---|---|---|
| GTIN-8 | 8 | Outside North America | Small items with limited space | EAN-8 |
| GTIN-12 | 12 | North America | Most retail products | UPC-A |
| GTIN-13 | 13 | Outside North America | Retail products | EAN-13 |
| GTIN-14 | 14 | Global | Trade item groupings (cases, pallets) | ITF-14, GS1-128 |
Source: GS1 US, GS1 Standards.
5) What Is a UPC?
UPC stands for Universal Product Code. It is a specific type of GTIN primarily used in North America. The UPC is a 12-digit code commonly associated with retail products in the US and Canada.
6) Key Characteristics of UPC
- UPC is a subset of GTIN, specifically the GTIN-12 format.
- It consists of 12 digits: a GS1 company prefix, an item reference number, and a check digit.
- UPCs are encoded in the UPC-A barcode symbology, widely scanned at retail POS terminals.
- UPCs enable fast product identification, price lookup, and inventory tracking.
7) GTIN vs UPC: The Differences
| Aspect | GTIN | UPC |
|---|---|---|
| Definition | Global Trade Item Number, a family of globally unique identifiers | Universal Product Code, a GTIN used mainly in North America |
| Digit Length | 8, 12, 13, or 14 digits | Always 12 digits (GTIN-12) |
| Geographic Usage | Worldwide | Primarily North America |
| Barcode Symbology | EAN, UPC, ITF-14, GS1 DataBar | UPC-A |
| Application | Product identification worldwide | Retail identification in US/Canada |
| Encoding | Barcodes or RFID tags | UPC-A barcodes |
Source: UPCs.com.
8) Why GTIN and UPC Matter
- Accurate product identification: Prevents duplication, inventory errors, and checkout confusion.
- Supply chain efficiency: Enables reliable tracking from manufacturing to distribution and returns.
- E-commerce compliance: Marketplaces like Amazon, Walmart, and eBay require valid GTINs for listings.
- Global trade facilitation: Standardizes product identity across borders and retailer requirements.
9) GTINs and Barcodes
Barcodes are graphical carriers of data. The GTIN is the data encoded within the barcode. This separation allows businesses to choose the right barcode format for each market.
- UPC-A: Encodes GTIN-12 (UPC), standard in the US and Canada.
- EAN-13: Encodes GTIN-13, used internationally.
- EAN-8: Encodes GTIN-8, for small packages.
- ITF-14: Encodes GTIN-14, used for cases and pallets.
10) How to Obtain GTINs and UPCs
Step 1: Register with GS1
GS1 is the global authority responsible for issuing GTINs and company prefixes. Register with GS1 US or your local GS1 office to receive a GS1 Company Prefix.
Step 2: Assign GTINs to Your Products
Use your GS1 Company Prefix to create unique GTINs for each product variant (size, color, packaging).
Step 3: Generate Barcodes
Once GTINs are assigned, generate UPC, EAN, or other barcode images for product packaging or labels.
Step 4: Maintain Your GTINs
Keep your GTINs updated and renew your GS1 membership annually if required.
11) Pricing Overview (GS1 US)
| Number of GTINs | Initial Fee (USD) | Annual Renewal Fee (USD) |
|---|---|---|
| 1 | $30 | $0 |
| 10 | $250 | $50 |
| 100 | $750 | $150 |
| 1,000 | $2,500 | $500 |
| 10,000 | $6,500 | $1,300 |
| 100,000 | $10,500 | $2,100 |
Source: GS1 US Pricing.
12) Common Questions
Can I use a UPC outside North America?
Yes. UPCs are designed for North America, but modern scanners can read both UPC and EAN barcodes in many markets.
What if I sell products on Amazon?
Amazon requires valid GTINs (often UPCs in the US) to list products. Using GS1-issued GTINs helps ensure listings are accepted.
Are GTINs the same as SKUs or FNSKUs?
No. SKUs are internal product codes used by merchants. FNSKU is Amazon¡¯s fulfillment network SKU. GTINs/UPCs are global identifiers recognized universally.
13) Best Practices
- Always use GS1-issued GTINs to avoid issues with retailers and marketplaces.
- Assign unique GTINs for every product variant (size, color, packaging).
- Ensure barcodes are printed clearly and tested for scanability.
- Keep your GTIN database aligned with product changes.
- Educate your team on the importance of these identifiers for inventory and sales accuracy.
Conclusion
GTIN is the global standard for product identification, and UPC is the North American GTIN-12 format. By registering with GS1, assigning unique codes, and using the correct barcode types, you ensure smoother operations and stronger marketplace compliance.
Ready to optimize your product identification system? Start with GS1 to secure compliant GTINs and UPCs, then build your catalog on a solid identity foundation.