Free CODE39 barcode generator

When to use a CODE39 barcode generator

Use CODE39 when a scanner or SOP still names Code 39 or 3 of 9. For new warehouse work, CODE128 is usually shorter. CODE39 supports uppercase letters, digits, and a small symbol set.

How to generate a CODE39 barcode

1. Type uppercase letters and digits above.
2. Click Generate. The CODE39 barcode appears on the canvas.
3. Add a readable caption if people need to type the ID.
4. Print at actual size.

FAQ

Can CODE39 encode lowercase?

Standard CODE39 is uppercase. Use CODE128 if you need mixed case or a tighter barcode.

Do I need an account?

No. Click Generate. The free label maker opens with your data already on the canvas. Work stays in this browser.