SKU Lookup
Type a SKU, model number, or product name and get the matching product with its UPC, EAN, GTIN, and Amazon ASIN. 10 free lookups every day.
Free daily lookups · UPC, EAN, GTIN, ISBN & ASIN · 1.6B+ products
A SKU lookup connects a SKU number to the product it belongs to. Type a SKU, model number, or product name into the search box above and you get the matching product with its UPC, EAN, GTIN, and Amazon ASIN. It is free to use, with 10 lookups every day.
TL;DR
- •A SKU is an internal code a store creates for its own inventory. There is no public SKU registry.
- •Because SKUs are internal, the fastest match route is the model number or product name on the item.
- •Our search returns the product with its universal codes: UPC, EAN, GTIN, and ASIN.
- •Teams map SKUs to UPCs once, in bulk, then every future lookup is instant.
What is a SKU number?
SKU stands for stock keeping unit. It is a code a retailer or warehouse invents to track its own inventory, like TSHIRT-BLU-M for a medium blue t-shirt. Every store writes SKUs its own way, and the same product has a different SKU in every store. That is the big difference from a UPC, which is one standard code shared everywhere.
How do I look up a SKU number?
Follow these three steps and you will find almost any product.
Step 1. Type the SKU into the search box. If the code is also a model number or manufacturer part number (MPN), which is common, the product comes straight up.
Step 2. No match? Search the product name or brand instead. SKUs are internal codes, so a code invented by one store may exist nowhere else. The name always works.
Step 3. Found it? The result shows the UPC, EAN, GTIN, and ASIN. Save that pairing. From now on your SKU is connected to codes the whole world understands.
Where is the SKU number on a package?
Usually it is not on the package at all. The number under the barcode on a product box is the UPC or EAN, not the SKU. SKUs live in the systems around the product instead. Check these places:
- The shelf label or price tag in the store, often near the price.
- Your receipt or the order confirmation email.
- The product page of the store, usually near the item title or in the details section.
- Your own inventory software, if you created the SKU yourself.
If all you have is the barcode on the box, that is a UPC. Run it through the free UPC lookup and you will get the same full product record.
SKU vs UPC vs MPN vs serial number
A simple way to remember it: the UPC names the product, the SKU names the product inside one store, and the serial number names one single unit. Our guide to product identifiers walks through the universal codes with examples.
| Code | Who creates it | Same in every store? | What it is for |
|---|---|---|---|
| SKU | Each retailer, for itself | No | Tracking stock inside one business |
| UPC / EAN | GS1, through the brand | Yes | Identifying the product everywhere |
| MPN | The manufacturer | Yes | Naming the exact factory model |
| Serial number | The manufacturer, per unit | Unique per unit | Warranty and repairs for one single item |
How do I convert a SKU to a UPC?
One at a time: search the SKU or product name above, open the result, and copy the UPC from the record.
In bulk: upload your SKU list with product names or MPNs to the bulk barcode lookup, and download the matched UPCs, EANs, and ASINs as one file. Teams with thousands of items use the product data API instead, so the mapping stays synced automatically as new stock arrives.
Why matching SKUs to universal codes pays off
Receiving gets faster. Warehouse staff scan the barcode on the box and your system knows which internal SKU it belongs to.
Listings get cleaner. Marketplaces and Google Shopping ask for GTINs, not your internal codes.
Reordering gets safer. Suppliers quote MPNs and UPCs. A solid SKU to UPC map stops wrong-item orders.
Multi-channel selling gets possible. One product, one identity, every channel. Our multi-channel inventory guide covers how sellers set this up.
Writing SKUs that will not haunt you later
If you are creating SKUs rather than decoding them, a few habits save years of cleanup.
- Encode meaning in a fixed order, like category, attribute, size: SHIRT-BLU-M. Anyone can read it without a manual.
- Avoid characters that read two ways. The letter O and zero, the letter I and one, cause mispicks at the shelf.
- Never reuse a retired SKU for a new product. Old orders and returns will collide with the new item.
- Map every SKU to its GTIN on day one, while the supplier paperwork is still in front of you. That single habit is what makes every later lookup instant.
Try it now
Search any SKU, model number, or product name in the box above. Free plan includes 10 lookups every day. No signup, no card.
Frequently Asked Questions
What is a SKU number?
SKU stands for stock keeping unit. It is an internal code a business creates to track its own inventory. Every store invents its own SKUs, so the same product carries a different SKU in each store.
Is a SKU the same as a UPC?
No. A UPC is a 12-digit standard barcode managed through GS1 and shared by everyone who sells the product. A SKU is a private code used inside one business. One product has one UPC but many different SKUs.
Where do I find the SKU number?
Check the shelf label, the receipt, or the product page of the store. The number printed under the barcode on the box is the UPC or EAN, not the SKU.
Can I look up a SKU from another store?
Sometimes. If the SKU matches a model number or MPN, our search will find it. If it is a purely internal code, search the product name instead and match it that way.
Is a SKU the same as a serial number?
No. A SKU covers a product line, so every medium blue t-shirt shares one SKU. A serial number is unique to one single unit and is used for warranty and repairs.
How do I convert many SKUs to UPCs at once?
Upload your list to the bulk barcode lookup and download the matched UPCs, EANs, and ASINs in one file. For ongoing syncing, connect the product data API.
Do I have to buy SKU numbers?
No. SKUs are free because you invent them yourself. What you license is the UPC or EAN, which comes from GS1 through a company prefix. SKUs are private, barcodes are the public standard.