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Barcode Format Quick Reference
- Code 128 — all ASCII, high density, general purpose
- Code 39 — uppercase + digits, industrial, healthcare
- EAN-13 — 13 digits, retail products worldwide
- EAN-8 — 8 digits, small packages
- UPC-A — 12 digits, North American retail
- UPC-E — 8 digits, compressed UPC for small packages
- ITF — numeric only, shipping cartons
Use the Barcode Generator at TechConverter.me to create print-ready barcodes for product labeling, inventory management, and asset tracking. All generation is client-side — your data never leaves your browser.
Examples
Example 1: Code 128 (General Purpose)
Input: SHIP-2024-001234
Format: Code 128
Output: High-density barcode encoding all ASCII characters
Use cases:
- Shipping labels
- Inventory management
- Asset tracking
- General-purpose labeling
Code 128 automatically selects the most efficient
encoding mode for each segment of data.Example 2: EAN-13 (Retail Products)
Input: 978020137962 (12 digits — check digit auto-calculated)
Format: EAN-13
Output: 978020137962 + check digit = 9780201379624
Structure:
978 — GS1 prefix (books)
020137 — publisher identifier
962 — item number
4 — check digit (auto-calculated)
Use cases:
- Consumer products worldwide
- Books (ISBN-13 uses EAN-13 format)
- Retail point-of-sale scanningExample 3: UPC-A (North American Retail)
Input: 03600029145 (11 digits — check digit auto-calculated)
Format: UPC-A
Output: 036000291452
Structure:
0 — number system digit
36000 — manufacturer code
29145 — product code
2 — check digit (auto-calculated)
Use cases:
- Products sold in US and Canada
- Grocery, retail, consumer goods