Free Online Barcode Generator — Create Professional Barcodes Instantly

Generate professional barcodes online for free. Create EAN-13, EAN-8, UPC-A, Code 128, Code 39, ITF-14 with automatic checksum calculation. Download high-quality PNG files ready for printing

Free Barcode Generator Tool
Generated Barcode
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Select barcode type and enter data to generate

Barcode Types Information
📦 EAN-13

Purpose: Standard format for retail products worldwide

Format: 13 digits (12 + checksum)

Example: 4820024700016

Usage: Supermarkets, stores, inventory management

🔤 Code 128

Purpose: Universal format for text and numbers

Characters: All ASCII characters (128 symbols)

Length: Variable length

Usage: Logistics, labels, inventory tracking

🇺🇸 UPC-A

Purpose: North American standard for products

Format: 12 digits

Structure: Manufacturer code + product code + checksum

Usage: Retail trade in USA and Canada

📋 ITF-14

Purpose: Packaging and logistics

Format: 14 digits GTIN

Features: Has frame around the code

Usage: Cartons, pallets, shipping

Frequently Asked Questions
What barcode types can I generate for free?

Our generator supports all popular linear barcode formats: EAN-13 (European standard for retail), EAN-8 (compact format), UPC-A (North American standard), Code 128 (universal text/numeric), Code 39 (alphanumeric), and ITF-14 (packaging and logistics). All barcodes are generated with automatic checksum calculation.

How do I download and use the generated barcode?

After generation, download your barcode as a high-quality PNG file ready for printing on labels, packaging, or documents. Minimum print size for EAN-13: 1 inch (2.5 cm) width. The barcode will scan properly with all standard barcode scanners and mobile apps.

Do I need to register EAN codes for commercial use?

For official retail sales, EAN-13 codes must be registered through your local GS1 organization to ensure global uniqueness. For internal use, testing, or demonstrations, you can use codes with prefixes 200-299 without registration. These test codes are not suitable for retail sales or international trade.

What is a checksum and how is it calculated?

A checksum is the last digit in EAN-13, EAN-8, and UPC-A codes that validates correct scanning. Our generator automatically calculates it using international GS1 standards: for EAN-13, odd position digits are multiplied by 1, even positions by 3, then the result is subtracted from the nearest multiple of 10.

What's the difference between EAN-13 and UPC-A barcodes?

EAN-13 (13 digits) is used globally, especially in Europe, while UPC-A (12 digits) is the North American standard used in the US and Canada. EAN-13 can contain a UPC-A code with an additional leading zero. Both formats have the same bar structure and are compatible with most scanners.

How can I verify my generated barcode quality?

Print your barcode and test it with a mobile scanner app or professional barcode scanner. The code should scan without errors. Check that the displayed data matches your input and verify the bars are sharp and clear with sufficient contrast (black bars on white background).

What are the recommended barcode sizes for printing?

Standard sizes: EAN-13 minimum 1.18×0.83 inches (30×21 mm), EAN-8 minimum 0.83×0.59 inches (21×15 mm). Required quiet zones: 0.14 inches (3.6 mm) for EAN-13, 0.09 inches (2.3 mm) for EAN-8. Print at minimum 300 DPI resolution for optimal scanning.

Can I change barcode colors when printing?

For best scanning results, use black bars on white background for maximum contrast. Dark colors (dark blue, brown, black) on light backgrounds are acceptable with at least 80% contrast. Avoid red and yellow colors as infrared scanners cannot read them properly.

Free Online Barcode Generator — Create Professional Barcodes in Seconds

Need to create high-quality barcodes for your business quickly? Our free online barcode generator lets you instantly create professional barcodes in all popular formats. Generate EAN-13, EAN-8, UPC-A, Code 128, Code 39, ITF-14 with automatic checksum calculation and high-quality PNG output.

Popular Barcode Formats for Business Use

EAN-13 — the most widely used format for retail products worldwide. 13 digits include country code, manufacturer code, and product code. Required for supermarkets and retail chains. Our generator automatically calculates the checksum digit according to GS1 international standards.

Code 128 — universal format for logistics and warehouse management. Supports all ASCII characters, perfect for internal marking and product tracking. Variable length up to 50 characters with high error protection.

EAN-8 — compact version for small products. 8 digits, ideal for cosmetics, pharmaceuticals, and stationery with limited label space. Maintains all EAN-13 advantages in a compact size.

UPC-A — North American standard (12 digits) for export to USA and Canada. Fully compatible with European EAN system and required for North American retail markets.

Technical Requirements and Print Quality

Print sizes: EAN-13 minimum 1.18×0.83 inches (30×21 mm), EAN-8 — 0.83×0.59 inches (21×15 mm). Quiet zones: 0.14 inches (3.6 mm) for EAN-13, 0.09 inches (2.3 mm) for EAN-8. Print resolution minimum 300 DPI.

Checksum calculation: Our generator automatically calculates check digits according to GS1 standards. For EAN-13: sum of odd positions × 1 + even positions × 3, result subtracted from nearest multiple of 10.

Code registration: For commercial use, EAN codes must be registered through your local GS1 organization. For testing, use range 200-299 which doesn't require registration.

Why Choose Our Barcode Generator

✓ Free barcode creation for all formats
✓ Automatic checksum calculation
✓ High-quality PNG for professional printing
✓ Compliance with international ISO and GS1 standards
✓ Instant generation without registration
✓ Mobile-friendly interface
✓ No watermarks or limitations

Create professional barcodes for your business for free. Perfect for retail, logistics, warehouse management, and internal product marking. Generate barcodes that scan reliably with all standard scanners and mobile apps.

⚠️ Disclaimer: all calculations on this site are approximate and provided for informational purposes. Results may differ from actual depending on individual conditions, technical specifications, region, legislative changes, etc.

Financial, medical, construction, utility, automotive, mathematical, educational and IT calculators are not professional advice and cannot be the sole basis for making important decisions. For accurate calculations and advice, we recommend consulting with specialized professionals.

The site administration bears no responsibility for possible errors or damages related to the use of calculation results.