Barcode Generator
Generate professional barcodes online for free. Choose from CODE128, EAN-13, EAN-8, UPC, and more. Download as SVG or PNG instantly. No signup required.
Preview
Free Online Barcode Generator
Calcon's Barcode Generator creates high-quality barcodes in the most popular formats — CODE128, CODE39, EAN-13, EAN-8, UPC-A, UPC-E, ITF-14, and MSI. The barcode updates in real-time as you type, and you can download it as a vector SVG (print-quality) or PNG (for web and documents).
Supported Barcode Formats
| Format | Characters | Use case |
|---|---|---|
| CODE128 | All ASCII (letters + numbers) | General purpose, shipping, inventory |
| CODE39 | Uppercase letters + digits | Automotive, defence, industrial |
| EAN-13 | 13 digits exactly | Retail products worldwide |
| EAN-8 | 8 digits exactly | Small retail packaging |
| UPC-A | 12 digits exactly | Retail products in USA/Canada |
| UPC-E | 8 digits exactly | Compact UPC for small packages |
| ITF-14 | 14 digits exactly | Shipping cartons (outer packaging) |
| MSI | Digits only | Warehouse inventory, libraries |
How to Generate a Barcode
- Enter your text or number in the Text / Number field.
- Select your Barcode Format from the dropdown. For general use, CODE128 is recommended. For retail products, use EAN-13 (13 digits) or UPC-A (12 digits).
- Adjust Width (bar density), Height,Font size, and colors using the controls.
- The barcode preview updates in real-time. Click Download SVGfor print-quality vector output, or Download PNG for a raster image.
Frequently Asked Questions
What is a barcode?
A barcode is a visual representation of data as parallel bars and spaces. It encodes information like product IDs or serial numbers and is scanned by barcode readers. Used in retail, logistics, healthcare, and manufacturing.
What barcode format should I use?
Use CODE128 for general purposes (supports all characters). Use EAN-13 for retail products worldwide. Use UPC-A for products in USA/Canada. Use CODE39 for inventory and industrial use.
What is a CODE128 barcode?
CODE128 is the most versatile barcode format, encoding all 128 ASCII characters with no length limit. It is the standard for shipping labels, inventory, and general applications.
What is the difference between EAN and UPC?
EAN-13 is the international retail standard (13 digits). UPC-A is the US/Canada standard (12 digits). Modern scanners read both. EAN-13 is a superset of UPC-A.
Can I use barcodes for my small business?
Yes. For internal tracking, create CODE128 barcodes with your own numbering. For retail products in stores, purchase GS1-licensed EAN or UPC numbers from gs1.org.
What is the difference between a barcode and a QR code?
Barcodes are 1D (horizontal lines only). QR codes are 2D (grid pattern) and store more data. QR codes can store URLs and are scannable by smartphones. Traditional barcodes need a dedicated scanner.
Can I download the barcode I generate?
Yes — download as SVG (vector, print-quality, infinitely scalable) or PNG (raster, for web and documents). Also copy as Base64 to embed directly in HTML.
Is the barcode generator free?
Yes, completely free. No usage limits, no signup, no watermarks. All barcode generation happens in your browser.
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