Scan a barcode with your phone or type the UPC, and Margenos finds the matching Walmart listing, even when several listings share one barcode, then shows the fees, your profit, sales estimate and competing sellers.
Point your camera at the barcode, type the UPC, or search by product name. It works in the store, in your garage or at a liquidation pallet.
When one UPC matches more than one Walmart listing, Margenos shows them all and lets you pick the right one.
Going through a pile of inventory? Scan item after item and every result is saved to your history with price and profit.
A plain UPC lookup tells you what an item is. Margenos tells you if it is worth selling on Walmart Marketplace: the price, what Walmart takes in fees, what you keep, and how fast it sells.
A UPC is the 12-digit number printed under the barcode on a product's package. If you have the item in your hand, that number is the fastest Walmart UPC lookup there is. If you want Walmart's price for it, scan the barcode with the scanner in the Walmart app (it's in the search bar and on the Services tab) and the app shows the price and offers.
Going the other way, from a Walmart.com listing to its UPC, is harder. The code isn't always shown on the visible product page. Sellers often find it in the page's source code: open the listing, view the page source, and search for "upc". If it shows nothing or "null", Walmart.com doesn't provide it for that listing, and you'll need the code from the physical package.
These two numbers get confused a lot:
One UPC can also match more than one Walmart listing, for example a single item and a multipack, or an old and a new listing for the same product. That's why a plain UPC reader isn't enough for reselling: you need to know which listing you would actually sell on.
If you plan to sell on Walmart Marketplace, UPCs matter for listing too. Walmart's minimum qualifications ask for products with GS1-issued GTIN/UPC numbers. When you resell an existing brand-name product, you match the listing that's already on Walmart.com, so you use the product's existing UPC. When you create a brand-new product, you need your own GS1 barcodes. Our guide to Walmart product listings covers item setup, and opening a Walmart seller account covers the rest of the requirements.
A generic UPC code scanner reads the barcode and tells you what the item is. A Walmart UPC scanner app for resellers answers what happens next: is it worth selling on Walmart?
| Generic UPC reader | Margenos | |
|---|---|---|
| Reads the barcode | Yes | Yes, in the Android app |
| Finds the Walmart.com listing | Sometimes | Yes, and shows every match when several share one UPC |
| Walmart fees, profit and ROI | No | Yes |
| Sales estimate and competing sellers | No | Yes, with each seller's stock |
| Variations (sizes, colors, packs) | No | Yes, in a variations panel |
Looking for a Walmart UPC finder Chrome extension? At your desk you usually don't need the UPC at all: the Margenos Chrome extension works right on the Walmart.com product page. In a store, use the Walmart scanner app. For case-pack buys from distributors, type the UPC and your unit cost, as described in Walmart wholesale, or run quick numbers in the profit calculator.
Sources: Walmart, Check a price; Walmart Marketplace, Getting started (minimum qualifications); Listing Mirror, Finding UPCs on Walmart.com. Walmart changes its rules; confirm in Seller Center.
Scan the barcode with the Margenos app or type the UPC. Margenos finds the matching Walmart listing and shows its price, fees and sellers.
Margenos shows every matching listing and lets you choose the right one before it calculates profit.
Yes. Scan items one after another. Each scan is saved to your history with its price and profit, and you can export the list.
No. Margenos is an independent tool from Lemont Holdings LLC and is not affiliated with Walmart Inc.
Look for the 12-digit number under the barcode on the package. On Walmart.com the UPC isn't always shown on the page; sellers often find it by viewing the page source and searching for "upc".
No. The UPC is the manufacturer's barcode number and is the same at every store. The Walmart item number is Walmart's own ID for a Walmart.com listing.
Yes. The Walmart app's scanner, in the search bar and on the Services tab, reads a barcode and shows Walmart's price and offers. It doesn't show seller fees or profit.
Walmart asks for products with GS1-issued GTIN/UPC numbers. If you resell an existing product, you match its listing and use the product's existing UPC. New products need your own GS1 barcodes.
Reading the number under the barcode or scanning it with the Walmart app costs nothing. To see Walmart fees, profit, sales and competing sellers for a UPC, Margenos starts with a 14-day free trial.
Add Margenos to Chrome and it works on every Walmart.com listing. Start your 14-day free trial.
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