Free Code 39 Barcode Generator

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10/31/2025

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Code 39 bar code is also known as 3of9 code, USD-3, and LOGMARS. ISO/IEC 16388:2007 standard defines code39 barcode. Many industries use Code39 barcode.
Code39 only accepts 43 valid input characters:
26 uppercase alphas (A - Z), digits (0-9), hyphen, period, space, dollar sign, slash, plus and percent.

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