What is GTIN Barcode Generator?
The GTIN (Global Trade Item Number) Barcode Generator is an essential tool for businesses to create standardized product identification codes. It generates valid GS1-compliant barcodes (UPC, EAN, ISBN) used globally in retail and logistics. These barcodes help in inventory management, price tracking, and supply chain optimization. The tool ensures correct check digit calculation and valid format compliance, crucial for product scanning systems. By generating accurate GTINs, businesses can streamline operations, reduce errors, and meet international trade requirements. Essential for manufacturers, retailers, and e-commerce sellers to create unique product identifiers for efficient product management and global distribution.
How to Use
1. Enter 12-digit number for UPC-A or 13-digit for EAN-13 in the input field
2. Click "Generate Barcode" to create your GTIN barcode
3. Verify the generated barcode matches your input
4. Click "Download Barcode" to save as PNG image
5. Use "Clear" button to reset and create new barcodes
The tool automatically calculates the check digit and validates input length. Ensure your input follows GS1 numbering standards. For ISBNs, use 13-digit format. The generated barcode can be printed on packaging or used in digital formats for product identification.
GTIN Calculation Formula
The GTIN check digit is calculated using MOD-10 algorithm:
1. Starting from right, multiply digits by 3-1-3-1...
2. Sum all results
3. Subtract sum from nearest equal/higher multiple of 10
Example: For 123456789012
Calculation: (1×3 + 2×1 + 3×3 + 4×1 + 5×3 + 6×1 + 7×3 + 8×1 + 9×3 + 0×1 + 1×3 + 2×1) = 66
Check digit = 70 - 66 = 4
Full GTIN: 1234567890124
What is the difference between GTIN and UPC?
GTIN (Global Trade Item Number) is the umbrella standard that includes UPC (Universal Product Code) as a subset. While UPC is primarily used in North America for retail products (12-digit), GTIN encompasses various international formats like EAN (13-digit) and ISBN. The GTIN system allows global product identification across different regions and industries. All UPCs are GTINs, but not all GTINs are UPCs. The generator tool supports both formats by accepting 12 or 13-digit inputs, automatically creating appropriate barcode symbology for universal scanning compatibility.
Can I use generated barcodes for real products?
While this tool generates technically valid barcodes, commercial use requires official GS1 company prefixes. The generated barcodes are suitable for testing and educational purposes. For real products, you must purchase valid GS1 prefixes to ensure global uniqueness and legal compliance. Using random numbers without GS1 registration may cause duplication issues in retail systems. Always verify barcode requirements with your local GS1 organization before product labeling. This tool helps understand barcode creation but doesn't replace official GS1 registration processes needed for commercial product distribution.
Why is my barcode not scanning?
Possible reasons include: 1) Incorrect check digit calculation 2) Invalid number length 3) Low image resolution 4) Printing quality issues 5) Scanner compatibility. This tool verifies check digits and format, but physical printing factors (size, contrast, quiet zones) affect scannability. Ensure barcodes are printed at recommended sizes (minimum 1.5" wide for UPC) with sufficient contrast. Maintain clear margins (quiet zones) on both ends. Test barcodes with multiple scanners before mass production. Digital barcodes should be in high-resolution PNG format. Always validate generated barcodes with GS1 certification services for commercial use.