Product Barcodes 101: UPC-A vs. EAN-13 Differences Explained

If you want to sell physical products, you will eventually run into barcode terms like UPC, EAN, GTIN, JAN, and GS1.

If you already have an official number and only need the barcode image, use the free Barcode Generator. If you are still deciding which product barcode format you need, this guide explains the difference.

For printing and export format decisions, also read How to Print Barcode Labels and PNG vs. SVG Barcodes.

What Is a Product Barcode?

A product barcode is a machine-readable image that represents a product identification number.

The barcode itself does not usually store the product name, price, description, category, or seller information. Instead, it encodes a number. Retail systems use that number to look up product information in a database.

For retail products, the important identifier is often called a GTIN, which stands for Global Trade Item Number.

The barcode image is just the scannable visual form of that number.

In simple terms:

GTIN = the product identification number
Barcode image = the scannable graphic that represents the number

A barcode generator can create the image from your number, but it does not issue official retail product numbers.

UPC-A vs EAN-13: The Basic Difference

UPC-A and EAN-13 are two common retail product barcode formats.

Format	Digits	Common Use
UPC-A	12 digits	United States and Canada
EAN-13	13 digits	Europe, Asia, Latin America, Australia, and many global markets

Both are used for retail product identification. Both can be scanned by modern point-of-sale systems. The main difference is the number length and regional convention.

What Is a UPC-A Barcode?

UPC-A stands for Universal Product Code. It is a 12-digit retail barcode format strongly associated with the United States and Canada.

A UPC-A code looks like this:

012345678905

UPC-A is commonly used for:

retail products in the US
retail products in Canada
Amazon US listings
grocery items
consumer packaged goods
physical store checkout systems
product packaging

If your main market is the United States or Canada, UPC-A is often the format people expect.

What Is an EAN-13 Barcode?

EAN-13 stands for European Article Number, although it is used far beyond Europe. It is a 13-digit retail barcode format.

An EAN-13 code looks like this:

4006381333931

EAN-13 is commonly used for:

products sold internationally
European retail
Asian retail
Latin American retail
global marketplace listings
export products
international packaging

If you plan to sell products outside North America, EAN-13 is often the safer global format.

UPC-A and EAN-13 Comparison Table

Feature	UPC-A	EAN-13
Number length	12 digits	13 digits
Common region	US and Canada	Global
Retail use	Yes	Yes
Product packaging	Yes	Yes
Requires official number for retail use	Yes	Yes
Can be generated as image	Yes	Yes
Good for internal inventory only	Usually unnecessary	Usually unnecessary

For internal labels, warehouse tags, or private SKUs, you usually do not need UPC-A or EAN-13. A format like Code 128 may be more flexible.

What Is a GTIN?

GTIN means Global Trade Item Number.

It is the number used to identify a product in retail and supply chain systems. UPC-A and EAN-13 are barcode formats that represent GTINs.

Depending on region and product type, you may see different GTIN lengths:

Term	Meaning
GTIN-12	12-digit product identifier, commonly shown as UPC-A
GTIN-13	13-digit product identifier, commonly shown as EAN-13
GTIN-14	14-digit identifier, often used for cartons or cases

The important point: the barcode image and the GTIN number are not the same thing.

The number is the identity. The barcode is the scannable representation.

What Is a JAN Code?

JAN means Japanese Article Number.

A JAN code is basically an EAN-13 barcode used in Japan. JAN codes typically begin with Japan-related prefixes such as 45 or 49.

Example:

4901234567894

If you are selling products in Japan, you may see the term JAN instead of EAN. Structurally, it works like EAN-13.

If you already have a valid JAN number, you can create an EAN-13 barcode image with a Barcode Generator.

Do You Need an Official Barcode Number?

For real retail products, yes.

A barcode generator can turn a number into a barcode image, but it does not make the number official, unique, or registered to your company.

If you want to sell products through major retail channels, marketplaces, distributors, or physical stores, you generally need official product identifiers assigned through the correct barcode authority.

Why this matters:

product identifiers must be unique
marketplaces may validate barcode ownership
retailers may reject invalid codes
duplicate numbers can cause inventory confusion
unofficial numbers may not match your brand

For internal use, such as warehouse labels or asset tracking, you can create your own internal codes. But for retail product packaging, use official numbers.

The Correct Workflow for Product Barcodes

Here is the safe workflow.

Step 1: Decide Where the Product Will Be Sold

If you are selling mainly in the US or Canada, UPC-A may be enough.

If you are selling internationally, EAN-13 may be more appropriate.

If you are selling in Japan, you may encounter JAN codes.

Step 2: Get Official Product Numbers

For commercial retail products, get the correct official numbers for your business and product variants.

Each product variation usually needs its own unique number. For example:

small black T-shirt
medium black T-shirt
large black T-shirt
small white T-shirt
medium white T-shirt

Each variation may need a separate barcode number because each one is a distinct sellable product.

Step 3: Generate the Barcode Image

Once you have the official number, use a Barcode Generator to create the visual barcode image.

Choose:

UPC-A for 12-digit UPC numbers
EAN-13 for 13-digit EAN or JAN numbers

Then export the barcode as PNG or SVG.

Step 4: Place the Barcode on the Label or Packaging

Use the barcode image in your product packaging, sticker, box, or label design.

For professional packaging, SVG is usually better because it scales cleanly. For simple sticker labels, PNG is often easier.

Step 5: Print and Test Scan

Before producing a large batch, print a sample and scan it.

Make sure:

the barcode is not stretched
the quiet zone is preserved
the print has high contrast
the number under the barcode is correct
the scanner reads the expected value

For more printing tips, read How to Print Barcode Labels.

UPC-A vs EAN-13 for Amazon

Many sellers first care about barcodes because they want to list products on Amazon or another marketplace.

The exact requirements can depend on marketplace, category, country, brand status, and exemption rules. But the general principle is simple: use valid product identifiers that match your product and brand.

For Amazon US, UPC-A is commonly used. For international marketplaces, EAN-13 may be common.

Do not assume that a random cheap barcode number is safe. If the number does not match your brand or product, it may create listing problems.

The barcode image is the easy part. The official number is the important part.

UPC-A vs EAN-13 for Internal Inventory

If you are labeling internal stock, shelves, boxes, equipment, or warehouse locations, you usually do not need UPC-A or EAN-13.

For internal workflows, Code 128 is often better because it supports letters and numbers.

Example internal codes:

SKU-BLACK-M-001
ASSET-LAPTOP-024
BIN-A12-03
ORDER-2026-1004

These are easier to manage with Code 128 than with strict numeric retail formats.

Use the Barcode Generator to create Code 128 labels for internal tracking.

If you need many internal labels at once, read Bulk Barcode Generator: Create Barcodes From Excel & CSV.

PNG or SVG for Product Barcodes?

For product barcodes, SVG is usually preferred for professional packaging because it scales without becoming blurry.

Use SVG for:

retail boxes
bottle labels
product packaging artwork
designer handoff
print-ready layouts

Use PNG for:

simple stickers
office label sheets
internal product labels
quick testing
basic printing workflows

If you are not sure, generate both. Use SVG for final design work and PNG for quick tests.

Common Mistakes With Product Barcodes

Mistake 1: Thinking the Barcode Image Makes the Number Official

A generator creates the image. It does not register the number.

Mistake 2: Reusing One Barcode for Multiple Product Variants

Different sizes, colors, bundles, or variations may need different product identifiers.

Mistake 3: Using UPC-A for Everything

UPC-A is common in North America, but EAN-13 is more common internationally.

Mistake 4: Printing the Barcode Too Small

Even a valid barcode may fail if it is printed too small or distorted.

Mistake 5: Ignoring the Quiet Zone

Do not place design elements too close to the barcode.

Mistake 6: Using Code 128 for Retail Checkout Products

Code 128 is great for internal labels, but retail checkout products usually need UPC-A or EAN-13.

Create UPC-A, EAN-13, Code 128, and QR Code images: Free Barcode Generator
Create many barcode images from Excel or CSV: Bulk Barcode Generator
Choose PNG or SVG export: PNG vs. SVG Barcodes
Print barcode labels correctly: How to Print Barcode Labels

Final Thoughts

UPC-A and EAN-13 are both product barcode formats, but they are used in slightly different retail contexts.

Use UPC-A when you are working mainly with North American retail products. Use EAN-13 when you need a more global product barcode format. Use JAN when dealing with Japan-specific retail workflows.

If you already have an official UPC, EAN, or JAN number, use the free Barcode Generator to create the barcode image and export it as PNG or SVG.

If you only need internal labels for SKUs, inventory, assets, or warehouse tracking, consider Code 128 instead.

FAQ

What is the difference between UPC-A and EAN-13?

UPC-A uses 12 digits and is common in the United States and Canada. EAN-13 uses 13 digits and is common across many global markets.

Is EAN-13 the same as UPC?

They are closely related retail barcode systems, but they use different number lengths. UPC-A has 12 digits, while EAN-13 has 13 digits.

What is a GTIN?

A GTIN is a Global Trade Item Number. It is the product identifier encoded inside a barcode such as UPC-A or EAN-13.

What is a JAN code?

A JAN code is a Japanese Article Number. It is structurally similar to EAN-13 and is used in Japan.

Can I generate a UPC barcode online?

Yes. If you already have a valid UPC number, you can use the Barcode Generator to create a UPC-A barcode image.

Can I generate an EAN-13 barcode online?

Yes. If you already have a valid 13-digit EAN number, you can generate an EAN-13 barcode image online.

Does a barcode generator give me an official product barcode number?

No. A barcode generator creates the visual barcode image from a number. It does not issue or register official product identifiers.

Do I need UPC-A or EAN-13 for internal inventory?

Usually no. For internal inventory, SKUs, and asset tags, Code 128 is often more flexible.

Should I export product barcodes as PNG or SVG?

Use SVG for professional packaging and design work. Use PNG for simple stickers, office labels, and quick print workflows.

Can I use the same barcode for different product variants?

Usually no. Different product variants such as size, color, or bundle type may need separate product identifiers.