Logistics

Code 128 vs. Code 39: Which is Best for Asset Tags?

When setting up an internal asset tracking system, you need a reliable barcode. The two most common choices are Code 39 and Code 128. But which one is right for you?

Infographic comparing Code 128 and Code 39 barcodes, highlighting Code 128 as the superior, high-density choice for modern asset tags and limited-space applications compared to the bulkier Code 39.

Code 39: The Old Reliable

**Code 39** is one of the oldest barcode formats. It's like a trusty old pickup truck: not the most efficient, but incredibly reliable and universally supported by virtually every barcode scanner ever made.

Pros: Extremely simple, doesn't require a checksum, and supported everywhere.
Cons: Low data density (barcodes are long), and limited to 43 characters (uppercase letters, numbers, and some symbols).

Code 128: The Modern Workhorse

**Code 128** is the modern standard for all logistics and internal tracking applications. It's like a modern cargo van: efficient, versatile, and can carry a lot more in a smaller space.

Pros: Very high data density (compact barcodes), supports the full 128-character ASCII set, and includes a mandatory checksum for accuracy.
Cons: Slightly more complex than Code 39, but this is handled automatically by any modern barcode generator.

The Verdict

For any new asset tracking system, **Code 128 is the clear winner**. It allows you to create shorter, more scannable labels that can hold more complex information (like `Asset-1001-A/B`).

You should only use Code 39 if you are forced to by a legacy system that doesn't support Code 128.

Create Your Asset Tags Now

Our free bulk generator can create both Code 128 and Code 39 barcodes. Import your asset list and start creating your labels in seconds.