Quadratic Equation Solver (ax² + bx + c = 0)
About Barcode Generator — Code 39
The Alphanumeric Code 39 (Code 3 of 9) Barcode Generator creates industrial barcodes supporting uppercase letters (A-Z), numbers (0-9), and symbols (`-`, `.`, ` `, `$`, `/`, `+`, `%`), Full ASCII mode, and optional Modulo-43 checksums.
How to Use Barcode Generator — Code 39
Step 1
Enter your alphanumeric text (e.g. `BIN-104-A`).
Step 2
Toggle optional Modulo-43 checksum or Full ASCII mode.
Step 3
Adjust bar height and text display options.
Step 4
Download your vector Code 39 barcode.
Practical Use Cases for Barcode Generator — Code 39
Automotive, Aerospace, and Military Asset Identification (MIL-STD-129 / LOGMARS)
Generate standardized Code 39 asset tracking barcodes for military equipment, automotive VIN labels, and industrial manufacturing machinery.
Library Card & Inventory Shelf Labeling
Create alphanumeric inventory barcodes for library books, student ID cards, and warehouse storage bin locations.
Input & Output Examples
Generating Alphanumeric Code 39 Label
Text: `ASSET-9942A`, Checksum: `Enabled (Modulo-43)`
Scannable Code 39 barcode encoding `*ASSET-9942A-7*` with start/stop asterisks and human-readable text
Key Features & Performance
- ✓Encodes uppercase letters (A-Z), digits (0-9), and 7 punctuation symbols (`-`, `.`, `$`, `/`, `+`, `%`, ` `).
- ✓Full ASCII Mode: encodes all 128 ASCII characters via two-character symbol pairing.
- ✓Optional Modulo-43 Check Digit validation.
- ✓100% Client-Side vector engine.
- ✓1-Click Download vector SVG and 300 DPI PNG.
Key Terminology & Definitions
Code 39 (Code 3 of 9)
A variable-length discrete barcode symbology where each character is represented by 9 elements (5 bars and 4 spaces), exactly 3 of which are wide.
Modulo-43 Checksum
An optional mathematical check character used in medical and military applications to detect character substitution errors in Code 39.