UPC Barcode FAQs - Frequently Asked Questions (2024)

UPC barcode numbers are not random numbers chosen by a brand owner, but a string of numbers which adhere to a global standard to enable products to be sold worldwide. To ensure authenticity and to prevent duplicate UPC barcodes from being assigned, the data in a UPC barcode must contain a UPC Company Prefix licensed to a specific brand, an Item Reference Number assigned by the brand owner, and a Check Digit which is mathematically calculated. The Barcode FAQs below will provide the necessary answers to enable your company to properly barcode your items.

Licensing a GS1 Prefix is Necessary to Create a UPC Barcode

Retailers and online marketplaces, such as Amazon, Walmart, Macy’s, Kroger, Target and many others,require suppliers have a GS1 Company Prefix issued to them, in order to do business with them. The UPC barcode GS1 Company Prefix provides assurances to retailers of the legitimacy of the UPC barcode data. As part of the onboarding processes for new suppliers, retailers (and Amazon) validate a brand’s provided UPC barcode data against the GS1 data registry. In addition, the GS1 Company Prefix is also used for case markings and even coupons. If you do not yet have a licensed GS1 Company Prefix, please CLICK HERE to get started.

Our certified standards and barcode professionals assist and educate thousands of companies each year with item identification and will ensure your UPC barcodes are properly assigned, created, and registered in global product databases. For additional information, click here.

Barcode FAQs: Frequently Asked Questions

Why do I see discounted UPC barcodes advertised online?

Be very wary of websites offering cheap UPC barcodes. Purchasing UPC numbers from another company goes against the global standards used by most retailers, distributors, hospitals and online marketplaces (i.e. Amazon). The companies who solicit these cheap UPC barcodes are providing their clients UPCs with a common GS1 Prefix. This is problematic for major retailers and online marketplaces. Due to extremely low prices, many companies are enticed to go with the more economical route. Unless you are only selling on your own website or to a few local stores, these UPCs will limit where you can sell your products. ManyUPC resellers who advertise on search engines are not reputable companiesand intentionally attempt to confuse companies who are not familiar with how UPC barcodes work. It is highly recommended that you discuss the use of these inexpensive UPCs with your potential trading partners and fully understand their limitations.

Is purchasing a single UPC from a reseller legal?

Marking a product with a UPC barcode is not a legal requirement. It is a trading partner requirement, which means the company who is requiring a UPC barcode symbol on items being sold is responsible for ensuring UPC compliance. Many large retailers, grocery chains, and distributors explicitly state in their Supplier Requirements that suppliers must obtain a UPC Company Prefix from the GS1. For example, retailers such as Walmart, Macy’s, Kroger, Sears and SuperValue require suppliers to provide a copy of their GS1 certificateduring their vendor onboarding process, while other retailers including Amazon use an online tool to verify UPC ownership.

Does Amazon allow suppliers to use barcodes obtained from a UPC reseller?

No, Amazon explicitly states on Seller Central that UPC barcodes must be obtained from the GS1 and be registered on the GS1 Data Hub portal. Please note that in the past Amazon did not require suppliers to obtain UPC codes from the GS1 and accepted UPCs from any source, including UPC resellers. However, in June 2016, Amazon updated their policy regarding UPCs and now requires suppliers only use UPCs that contain a GS1 Company Prefix issued to thesupplier’s company name.

To view Amazon’s UPC policy, login into Amazon’s Seller Central and review the Product UPCs and GTINs section. Here’s what is published on Amazon’s Seller Central;

“We verify the authenticity of product UPCs by checking the GS1 database. UPCs that do not match the information provided by GS1 will be considered invalid. We recommend obtaining your UPCs directly from GS1 (and not from other third parties selling UPC licenses) to ensure the appropriate information is reflected in the GS1 database.

* Important: All invalid product UPC listings will be removed and may result in your ASIN creation or selling privileges being temporarily or permanently removed.”

How do I determine how many UPCs to Buy?

Companies technically do not “buy” UPCs, but rather license a GS1 Company Prefix. The Company Prefix enables a company to create the UPC barcode numbers (aka GTINs). The length of a Company Prefix will determine how many GTIN assignments can be created. Consequently, you will license a GS1 Company Prefix to create assignments in 10,100,1000, 10000 and 100,000 blocks. The pricing of the GS1 Company Prefix is dependent on how many UPC assignments (GTINs) you will need.

Every product requires a unique UPC (GTIN) barcode assignment so companies need to take into consideration every variance of size and color. For example, if you have 15 items and each item can come in one of six colors, you will need to create 90 UPCs (GTINs) (15 x 6).

What happens if I assign all of my GTINs available with my UPC Company Prefix?

It is very common for companies to grow beyond their available GTINs, so additional UPC Company Prefixes can be obtained. For example, if you currently only have 5 items and think it will take a few years before you triple the number of products you offer, you can obtain a UPC Company Prefix now which provides you 10 GTIN assignments and license an additional UPC Company Prefix in the future.

Additional Information

For additional information regarding UPC barcodes, we suggest reviewing the following article we have posted on our blog:Bar Coding Facts: Getting Your Products Labeled Properly Frequently asked questions about the GS1 Barcode Service can be viewed at https://www.barcode.graphics/gs1-barcode-service-faqs/.

UPC Barcode FAQs - Frequently Asked Questions (2024)

FAQs

What are the rules for UPC codes? ›

The standard magnification for (100%) UPC symbols requires a total area of 1.46″ x 1.020″. UPC sizes can range between 80-200%. Symbols less than 80% (1.1875″ x . 813″) may not scannable by retailers.

What is the difference between a barcode and a UPC code? ›

A barcode and a UPC are two different elements that work together to identify a product. The UPC, which stands for universal product code, is a 12-digit number assigned to merchandise, while the barcode is the machine-readable version of that number.

What are the acceptable colors for UPC? ›

Bar codes can be printed in colors other than black and white. The bars of a symbol should either be black or blue. Acceptable colors for space can be white, yellow, or red.

What information is stored in a UPC barcode? ›

Myth #1: UPC Barcodes contain name and price data inside their bars. False. Every retail product you've bought uses a UPC or EAN barcode so the store can uniquely identify the item. The barcode image and number mean the same exact thing, it's a simple 12 (or 13) digit ID number.

Can two products have the same UPC code? ›

No, each product or item should have a unique barcode assigned to it. A barcode is a unique identifier that is used to track and identify products in a retail or inventory management system. Barcodes are designed to be unique for each product to ensure accurate tracking, inventory management, and sales data collection.

What makes a UPC code valid? ›

Determine the check digit: Find the smallest number that, when added to 119, results in a multiple of 10. In this case, it's 1 because 119 + 1 = 120, which is a multiple of 10. Verify the check digit: Compare this number (1) with the last digit of the UPC. If they match, the UPC is valid.

How is a UPC different from a SKU? ›

SKUs are for internal use, while UPCs are for external or broad use by retailers. A unique SKU can be created by a business, while a UPC code is a GS1 prefix plus other company digits that remain constant throughout the product's shelf-life.

Who assigns UPC codes? ›

The first six to nine digits of a UPC are referred to as the “Company Prefix”, and they are assigned by a non-profit organization (GS1 US formerly the Uniform Code Council).

What requires an UPC change? ›

If a product comes in different sizes, each size will need it's own UPC. The same is true for varying packaging configurations. A plastic bottle of sparkling water will need a different UPC than the same sparkling water in a glass bottle.

What is the only color that Cannot be used with barcode? ›

Tips for Selecting Colors For Barcode Labels

Scanners read barcodes best when the background reflects light and the bars don't reflect any. Scanners have a hard time picking up yellow and red colors because they can't “see” those colors, but black and blue based colors are much easier for a scanner to pick up.

What is the most common UPC code? ›

UPC CODES: The UPC-E barcode is a universal product code and the most used in the United States. These can be read in any direction and are characterized by always starting with the numerical value 0. UPC A (or GTIN 12): It has twelve digits. It is used mostly in retail items, for example, in grocery stores.

What is the smallest size a UPC code can be? ›

This means they must be at least 0.0936 inches for the minimum x-dimension and at least 0.234 inches for the maximum X-dimension.

How many digits does a UPC consist of? ›

The UPC-A barcode is visually represented by strips of bars and spaces that encode the UPC-A 12-digit number. Each digit is represented by a unique pattern of 2 bars and 2 spaces.

How to decipher UPC code? ›

A typical UPC barcode's 12 digits include:
  1. the GS1 Company Prefix which is the brand owners identification number assigned by GS1 (the first six to ten digits of the UPC number)
  2. an item number assigned by the brand owner (the next one to five digits)
  3. a check digit (the last digit)
Dec 20, 2022

What does the first digit of an UPC code mean? ›

The first digit is a number system digit, which typically represents the product type. The next five digits are the manufacturer's code. And the final five digits are the specific product's identifier. UPC-E is a shorter UPC code, consisting of seven digits, which is typically used for small retail items.

What are the criteria for a UPC? ›

The required size of a UPC is 1.469” wide by 1.02“ tall. The UPC can be reduced by up to 80% and can be increased by up to 200%.

How many UPC codes do I need for one product? ›

As a general rule, every variation of your product will need its own UPC. If your product comes in different colors or patterns, each different color or pattern will need a UPC. If your product comes in different sizes, each size will need a UPC. The same is true for different configurations and packaging.

Do UPC codes need to be registered? ›

We recommend after purchasing you register your UPC codes at the vendor you first plan to sell. For example, with Amazon, you can do so following the instructions here.

What is the correct format of UPC code? ›

Anatomy of a UPC (Universal Product Code) Barcode

A standard UPC-A barcode consists of 12 digits comprising of 4 unique sections, and they are: a 'Number System Character', a 5 digit 'Manufacturer Number', a 5 digit "Item Number', and a 'Check Digit. '

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