Quadratic Equation Solver (ax² + bx + c = 0)
About Barcode Generator — UPC-A
The Official UPC-A (GTIN-12) North American Retail Barcode Generator creates standard 12-digit point-of-sale barcodes for products sold across the United States and Canada with automatic Modulo-10 check digit verification and vector SVG export.
How to Use Barcode Generator — UPC-A
Step 1
Enter your 11-digit or 12-digit UPC code.
Step 2
Check the computed checksum digit.
Step 3
Customize bar height and quiet zone margins.
Step 4
Download vector SVG for packaging production.
Practical Use Cases for Barcode Generator — UPC-A
US & Canadian Retail Point-of-Sale (POS) Packaging
Generate compliant 12-digit UPC-A barcodes for products destined for Amazon US, Walmart, Target, Home Depot, and North American retailers.
Verifying Company GS1 Prefix & Item Reference Numbers
Enter your 6-to-10 digit GS1 Company Prefix and item number to compute the final check digit and produce camera-ready vector packaging art.
Input & Output Examples
Generating UPC-A Barcode for Beverage Can
11-Digit Code: `01234567890`
Full 12-Digit UPC-A: `012345678905` (Check Digit: `5`) + Vector SVG ready for packaging dies
Key Features & Performance
- ✓Automatic Modulo-10 Check Digit calculation for 11-digit inputs.
- ✓GS1 Number System Character formatting (0 standard items, 2 variable weight meat/produce, 3 pharma, 5 coupons).
- ✓Customizable bar width reduction (BWR) compensation for ink-bleed on cardboard printing.
- ✓100% Client-Side vector generator.
- ✓1-Click Download vector SVG and PNG.
Key Terminology & Definitions
UPC-A (Universal Product Code)
The standard 12-digit retail barcode format introduced in 1974 used across the USA and Canada for POS scanning.
Bar Width Reduction (BWR)
Slightly narrowing printed bars during prepress to compensate for physical ink bleeding on absorbent packaging substrates.