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Free UPC-A Barcode Generator

The standard 12-digit point-of-sale barcode for retail products in the United States and Canada.

11. Selected SymbologyGS1 General Specifications / ISO/IEC 15420

UPC-A

UPC-A — Standard retail barcode for North America (12 numeric digits).

22. Enter Barcode ValueVALID ✅

ℹ️ 12 Numeric digits (0-9)

⚙️ Barcode Sizing & Visual Style▼

Bar Width (2x)

Bar Height (px)

Quiet Zone Margin

Text Font Size

Bar Color

Background Color

Display Human-Readable Text

Text Position

Instant Barcode Preview

Vector Live Preview

Download Format:

TECHNICAL SPECCHECKSUM PASS

TYPE: UPC-A

LENGTH: 12

DATA: 012345678905

What is UPC-A Barcode?

The standard 12-digit point-of-sale barcode for retail products in the United States and Canada. Defined under standard GS1 General Specifications / ISO/IEC 15420, UPC-A is engineered for fast, reliable optical scanning across industrial and commercial environments.

Specification	Details
Standard Symbology	UPC-A (GS1 General Specifications / ISO/IEC 15420)
Character Set	12 Numeric digits (0-9)
Checksum Algorithm	Modulo 10 check digit (3x odd positions + 1x even positions)
Quiet Zone Margin	9 times the X-dimension on left side, 9 times on right side (standard 0.25 inch / 6.35 mm)
Processing Mode	100% Client-Side In-Browser (Zero Server Logs)

✅ Key Advantages

•Globally recognized standard in North American retail
•Built-in Mod 10 checksum prevents scanning errors
•Instant scanning compatibility with all retail laser & optical POS scanners

📦 Common Use Cases

•Retail point-of-sale checkout in the US and Canada
•Consumer packaged goods (CPG) inventory tracking
•Ecommerce listings on Amazon, Walmart, and Target

⚠️ Official Retail & GS1 Compliance Notice

MakeMyBarcode generates standard-compliant, high-resolution barcode images for free. However, MakeMyBarcode does not assign official company prefixes. If you are selling products in commercial retail stores (Amazon, Walmart, Target), you must license your official company prefix directly from GS1.

Frequently Asked Questions

What is a UPC-A barcode?

UPC-A (Universal Product Code) is the standard 12-digit barcode used to identify consumer items sold at retail checkout in North America. It consists of a GS1 company prefix, item reference number, and a final Modulo 10 check digit.

How is the UPC-A check digit calculated?

The 12th digit is calculated by summing the digits at odd positions multiplied by 3, adding the sum of digits at even positions, and taking the difference between the sum and the next multiple of 10.

Does MakeMyBarcode issue official UPC numbers?

No. MakeMyBarcode generates the high-resolution barcode image file. If you are selling products in major retail stores, you must license your official GS1 Company Prefix directly from GS1.