Code 39 Barcode Generator: Free Code 39 and Code 39 Extended
Code 39 is the classic barcode used on ID cards, library books and many government and factory systems. Type your value and get a clean Code 39 in seconds.
- Works on your device. Nothing is uploaded.
- Free, no watermark
- No signup
How to use
- Type capital letters, digits and the symbols - . $ / + % or space (small letters are changed to capitals).
- Need small letters or other symbols? Pick Code 39 Extended in the list.
- Set the size and download PNG, SVG or a PDF label.
Good to know
Each Code 39 character has 9 elements, 3 of them wide; the code starts and ends with an asterisk (*), which is added for you and is not part of your data.
Code 39 needs no check digit, but some systems ask for the optional mod-43 check. It is wider than Code 128 for the same data, so keep values short.
Code 39 Extended uses pairs of characters to show lower-case letters and more symbols; your scanner must have 'Full ASCII' turned on to read them correctly.
Questions
Why did my small letters become capitals?
Standard Code 39 has only capital letters. Choose Code 39 Extended if you need small letters.
Do I type the * start and stop?
No. They are added automatically.
Is Code 39 still used?
Yes, on ID cards, in defence and automotive labelling, libraries and many older systems.
Which is better, Code 39 or Code 128?
Code 128 is more compact and supports all ASCII. Use Code 39 if your system or customer asks for it.
Can I print Code 39 on ID cards?
Yes. Download SVG or PDF for the card design software, or PNG at 600 DPI.