Barcode Generator Online
Free Barcode Generator Online
Generate EAN-13, UPC-A, EAN-8, CODE128 and CODE39 barcodes. Validate retail check digits before generating and export clean SVG or high-resolution PNG files.
Barcode Settings
Select a format and enter a valid barcode value.
890123456789
Enter 12 digits; the check digit is calculated automatically.Live Preview
Validated barcode output with check-digit verification.
Understanding Barcode Standards for Retail & Logistics
Selecting the correct barcode format helps support accurate checkout scanning, inventory identification and logistics workflows.
EAN-13 & UPC-A
Common retail barcode formats used to identify packaged consumer products. This tool validates the mathematical check digit when a complete code is entered.
CODE-128
A high-density alphanumeric symbology commonly used for shipping, logistics, labels and internal tracking.
CODE-39
A commonly used internal barcode format supporting uppercase letters, numbers, spaces and selected symbols for inventory and SKU workflows.
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Free Online Barcode Generator for Retail, Inventory & Logistics
Our free online barcode generator helps businesses, retailers, manufacturers, warehouses and logistics companies create professional barcode labels instantly. Generate EAN13, UPC, EAN8, CODE128 and CODE39 barcodes online without installing any software or design tools.
Barcodes are essential for modern inventory management, retail billing systems, warehouse operations, shipping labels, asset tracking and product packaging. A barcode stores information in a machine-readable format that can be scanned quickly using barcode scanners, POS systems and mobile devices.
This professional barcode maker automatically supports checksum generation for EAN13 and UPC formats, ensuring accurate retail barcode creation for commercial applications. You can instantly download high-resolution barcode labels in PNG or SVG format for websites, packaging, printing, inventory management systems and shipping operations.
Whether you need a barcode generator for supermarket products, warehouse inventory, industrial packaging or eCommerce shipping, this free barcode creator provides a fast, secure and professional solution. The generated barcode labels are print-ready and compatible with most barcode scanners and retail POS systems used worldwide.
Barcode Generator Examples
Below are some common examples of barcode formats used in retail, inventory management and logistics systems.
EAN13 Barcode Example
Input:
890123456789Auto Generated:
8901234567897UPC Barcode Example
Input:
12345678901Auto Generated:
123456789012CODE128 Example
INV-2026-001Best for shipping labels and inventory tracking.
CODE39 Example
SKU12345Commonly used in warehouses and industrial systems.
Common Barcode Generator Use Cases
EAN13 Barcode Formula & Check Digit Calculation
EAN13 barcodes use a mathematical checksum validation system to ensure barcode accuracy. The first 12 digits are used to automatically calculate the 13th check digit. This helps barcode scanners detect errors during scanning.
(10 − ((Odd Digits + Even Digits × 3) mod 10)) mod 10
UPC barcodes use a similar checksum formula for validation. These checksum algorithms improve barcode reliability, reduce scanning errors and ensure accurate retail product identification across POS systems and logistics networks.
Frequently Asked Questions
Is this barcode generator free?
Yes. This online barcode generator is completely free for personal and commercial use. You can create unlimited barcode labels without registration.
Which barcode format should I use?
EAN13 is best for retail products, UPC is commonly used in supermarkets, CODE128 is ideal for shipping and logistics, while CODE39 is widely used for inventory and warehouse management systems.
Can I print barcode labels?
Yes. You can download barcode labels in PNG or SVG format and print them using label printers, thermal printers or standard office printers.
Are generated barcodes scanner compatible?
Yes. The generated barcodes are compatible with most barcode scanners, POS systems and inventory management software used in retail and logistics industries.
What is the difference between EAN13 and UPC?
EAN13 uses 13 digits and is commonly used internationally, while UPC uses 12 digits and is more common in North America. Both formats are widely accepted in retail environments.
Can I use generated barcodes for products?
Yes, but official retail products may require GS1 registration depending on your country and marketplace requirements.