GTIN (Global Trade Item Number) is the international numbering system that uniquely identifies products worldwide. From store barcodes to e-commerce marketplace listings, GTIN is everywhere. Amazon, Google Shopping, and many marketplaces now reject product listings without valid GTINs. This guide explains what GTIN is, its types, how to obtain one, and why it's critical for e-commerce.
1. What Is GTIN?
- Full name: Global Trade Item Number
- Management: Administered by GS1 (Global Standards One)
- Purpose: Assign a globally unique number to every product for identification
- Usage: Barcodes, inventory management, e-commerce, supply chain, retail
- Scope: Used by 2+ million companies in 150+ countries
2. GTIN Types
| Type | Digits | Also Known As | Use Case |
|---|---|---|---|
| GTIN-8 | 8 digits | EAN-8 | Small products (gum, pens, small packaging) |
| GTIN-12 | 12 digits | UPC-A | North American retail (US, Canada) |
| GTIN-13 | 13 digits | EAN-13 | International retail — most common type |
| GTIN-14 | 14 digits | ITF-14 | Case/pallet level — wholesale/logistics |
Special GTIN Types
| Type | Digits | Usage |
|---|---|---|
| ISBN | 13 digits | Books (International Standard Book Number) |
| ISSN | 8 digits | Magazines and periodicals |
| ISMN | 13 digits | Printed music scores |
3. GTIN Structure (EAN-13 Example)
| Section | Digits | Description | Example |
|---|---|---|---|
| Country prefix | 2-3 digits | GS1 country code (US: 000-019) | 001 |
| Company code | 4-7 digits | Number assigned to company by GS1 | 23456 |
| Product code | 2-5 digits | Number assigned to product by company | 7890 |
| Check digit | 1 digit | Auto-calculated verification digit | 5 |
4. GTIN and Barcode Relationship
| GTIN Type | Barcode Format | Visual |
|---|---|---|
| GTIN-8 | EAN-8 barcode | Short bar barcode |
| GTIN-12 | UPC-A barcode | 12-bar US barcode |
| GTIN-13 | EAN-13 barcode | 13-bar international barcode |
| GTIN-14 | ITF-14 barcode | Thick-bordered case barcode |
Key point: GTIN is the number system; barcode is its visual representation.
5. GTIN in E-Commerce
Why It Matters
- Product matching: Marketplaces match same products from different sellers via GTIN
- Google Shopping: Without GTIN, ad performance drops significantly
- Buy Box: GTIN is required to win Amazon's Buy Box
- SEO: Google prioritizes products with GTINs in search
- Trust: GTIN shows the product is authentic and registered
Marketplace GTIN Rules
| Platform | GTIN Required? | Note |
|---|---|---|
| Amazon | ✅ Yes (most categories) | Brand Registry exemption possible |
| Google Shopping | ✅ Yes (known brands) | Lower performance without GTIN |
| eBay | ✅ Yes (most categories) | Affects search ranking |
| Walmart | ✅ Yes | Required for listing |
| Etsy | ⚠️ Optional | Recommended for branded products |
6. How to Get a GTIN
- Apply: Visit your country's GS1 organization (e.g., gs1us.org for US)
- Membership form: Complete the online application
- Documents: Business registration, tax ID
- Company prefix: GS1 assigns your unique company prefix
- Product numbering: Assign numbers to your products under your prefix
- Barcode generation: Create barcode images from your GTIN numbers
GS1 Membership Costs (2026 Estimate)
| Package | Product Capacity | Annual Fee (Est.) |
|---|---|---|
| Starter | 10 products | $250-500 |
| Small business | 100 products | $500-1,000 |
| Medium business | 1,000 products | $1,000-2,500 |
| Large business | 10,000+ products | $2,500-10,000 |
7. What If You Don't Have a GTIN?
- Handmade / Custom: Etsy, Amazon Handmade offer GTIN exemptions
- Private label: Amazon Brand Registry provides GTIN exemption
- Vintage / Used: Most platforms don't require GTIN
- Own website: No GTIN requirement, but helps SEO
- Internal barcode: Create internal barcodes with SKU (not valid on marketplaces)
Simplify GTIN & Barcode Management with Beekod
Multi-marketplace integration to auto-sync your GTIN/barcode data across all platforms.
Start Free Trial8. GTIN vs SKU vs UPC vs EAN
| Term | Description | Scope | Assigned By |
|---|---|---|---|
| GTIN | Global Trade Item Number (umbrella term) | Global | GS1 |
| EAN | European Article Number (GTIN-13) | International | GS1 |
| UPC | Universal Product Code (GTIN-12) | North America | GS1 |
| SKU | Stock Keeping Unit — internal stock code | Company-internal | Seller |
| ASIN | Amazon Standard Identification Number | Amazon | Amazon |
| MPN | Manufacturer Part Number | Manufacturer-level | Manufacturer |
9. FAQ
Does every product need a separate GTIN?
Yes. Every different product, size, color, and packaging requires a separate GTIN. For example, the same t-shirt in S, M, L sizes each gets a different GTIN.
Is GTIN the same as a barcode?
No. GTIN is the number system; barcode is the visual representation readable by optical scanners.
Can I buy GTINs from third-party sellers?
Not recommended. Amazon and Google only accept GS1-issued GTINs. Third-party numbers may be rejected.
Can a GTIN be changed?
No. A GTIN assigned to a product is permanent. If the product changes significantly, a new GTIN is obtained.
How is the check digit calculated?
Automatically calculated using the GS1 algorithm. Verify at GS1 Check Digit Calculator.
Conclusion
GTIN is one of modern e-commerce's fundamental infrastructure building blocks. Product listing on marketplaces, Google Shopping ads, and supply chain management now require GTIN numbers. Apply through your country's GS1 organization to get globally valid barcode numbers for your products and professionalize your e-commerce operations.
