Code 39 Barcode Generator

Create professional Code 39 barcodes instantly with our free online tool. Perfect for inventory management, product labeling, and asset tracking. No registration required.

Enter text to encode:

Barcode width (px):

Barcode height (px):

Display text below barcode:

How It Works

1 Enter Your Data

Type the text, numbers, or symbols you want to encode in the input field. Code 39 supports alphanumeric characters and some special symbols.

2 Customize Settings

Adjust the barcode dimensions and choose whether to display the encoded text below the barcode for better readability.

3 Generate & Download

Click the generate button to create your barcode instantly. Download in SVG or PNG format for use in documents, labels, or inventory systems.

Pro Tips for Using Code 39 Barcodes

💡 Keep It Simple

Code 39 works best with short strings. For longer data, consider using Code 128 which offers higher density encoding.

💡 Check Character Support

Code 39 supports uppercase letters (A-Z), numbers (0-9), and these symbols: - . $ / + % and space. It does not support lowercase letters.

💡 Test Scannability

Always test your printed barcodes with your scanning equipment to ensure they read correctly before mass production.

Common Use Cases

📦

Inventory Management

Track products and supplies in warehouses with unique barcode identifiers.

🏷️

Product Labeling

Create labels for retail products with SKU numbers and pricing information.

🖨️

Document Tracking

Add barcodes to files and documents for efficient organization and retrieval.

🔧

Asset Management

Tag equipment and tools with barcodes for maintenance tracking and inventory.

🎫

Event Tickets

Generate unique barcodes for event tickets and access control systems.

🏥

Healthcare

Label patient records, medication, and medical equipment for accurate tracking.

Frequently Asked Questions

What is Code 39 barcode format?

Code 39 (also known as Alpha39, Code 3 of 9, or USD-3) is a variable-length, discrete barcode symbology that can encode uppercase letters (A-Z), digits (0-9), and a handful of special characters like - . $ / + % and space.

What are the limitations of Code 39?

Code 39 does not support lowercase letters and has a relatively low data density compared to newer barcode formats. It's best suited for short alphanumeric strings rather than long sequences of data.

Is Code 39 still widely used?

Yes, Code 39 remains popular in many industries, particularly logistics, manufacturing, and healthcare, due to its simplicity and the fact that it doesn't require a checksum digit for basic implementation.

What's the difference between SVG and PNG downloads?

SVG (Scalable Vector Graphics) files are resolution-independent and can be scaled to any size without quality loss, making them ideal for printing. PNG (Portable Network Graphics) files are raster images with transparent backgrounds, suitable for digital use.

Can I use these barcodes commercially?

Yes, all barcodes generated with our tool are free for personal and commercial use. There are no licensing fees for using Code 39 barcodes.

Do you store the data I encode in barcodes?

No, our barcode generator works entirely in your browser. We don't store or transmit any of the data you encode. Your privacy is important to us.