ASIN to UPC Converter
Paste an ASIN above and get its UPC now. 10 free conversions a day.
Free daily lookups · UPC, EAN, GTIN, ISBN & ASIN · 1.6B+ products
Paste any Amazon ASIN into the box above and get the UPC, EAN, and GTIN registered to that product, together with its name, brand, and images. The conversion is free for 10 lookups a day, works in bulk by CSV, and runs as an API for anything automated.
TL;DR
- •An ASIN only works on Amazon. The UPC is the same product’s identity everywhere else.
- •Conversion is a lookup: we find the catalog record where the two codes meet.
- •One ASIN can map to more than one UPC, and we show you all of them rather than guessing.
- •Free tier daily, CSV for lists, JSON API for systems.
What does ASIN to UPC conversion mean?
Amazon files every product under an ASIN, a 10-character code that means nothing outside Amazon. The rest of retail identifies the same product by its UPC or EAN. Converting ASIN to UPC means finding the catalog record that links the two, so you can take a product you found on Amazon and match it to supplier lists, invoices, and other stores.
How to convert an ASIN to a UPC
Step 1. Copy the ASIN from the Amazon page. It is the code after /dp/ in the address, usually starting with B0.
Step 2. Paste it into the search box above.
Step 3. Read the result: the UPC and EAN registered to the product, plus name, brand, images, and variation details so you can confirm the exact item.
One ASIN, several UPCs: what that means
The mapping is not always one to one. A brand may register new codes for repackaged versions, and a listing that covers variations groups several sellable products, each with its own UPC. When that happens the result lists every code we have for the ASIN. Check the variation details before you order stock, the medium and the large carry different barcodes on the box.
Why sellers run this conversion
Sourcing: you found a winning listing and need the barcode to quote suppliers with. Our guide on how to convert ASIN to UPC covers the full sourcing workflow.
Catalog sync: your inventory system tracks GTINs, Amazon speaks ASIN. The conversion keeps both sides pointing at one product.
Wholesale matching: a supplier catalog lists UPCs, your research lists ASINs. Convert either direction and the lists join.
Going the other way: holding barcodes and hunting the listings? Use the UPC to ASIN converter.
Reading the result like a sourcing pro
Match the variation first. The UPC belongs to one sellable version, confirm the size and color before quoting a supplier.
Keep the pair. Save the ASIN and UPC together in your sourcing sheet, future lookups become instant and disputes become checkable.
Watch for repackaged codes. A brand that changed packaging may have retired the code your supplier still quotes, the record shows what is current.
Bulk conversion and the API
Lists go through the bulk barcode lookup: upload a CSV of ASINs and download the matched UPCs and EANs in one file. Systems use the API: one POST with the ASIN and identifierType set to asin returns the full record as JSON. The product data API page shows the exact request, and the sandbox key is free with 10 calls a day. Web plans run $0, $10, and $49 per month (pricing current as of August 2026).
Frequently Asked Questions
Is there a free ASIN to UPC converter?
Yes, this one. You get 10 conversions a day free with no signup. Volume needs are covered by the $10 and $49 monthly plans or the API (pricing as of August 2026).
Why does an ASIN sometimes return multiple UPCs?
Because Amazon listings can group variations, and brands sometimes register fresh codes for new packaging. Each sellable version has its own UPC, so the converter shows every code linked to the ASIN instead of picking one for you.
Can I convert ASIN to UPC in bulk?
Yes. Upload a CSV of ASINs to the bulk lookup and download the matched barcodes in one file, or send them through the API if the job repeats.
Does every Amazon product have a UPC?
Most retail products do. Some categories are exempt from barcode requirements and some listings were created under GTIN exemptions, so a small share of ASINs genuinely have no public UPC. The converter tells you when that is the case rather than inventing one.
Is there an ASIN to UPC API?
Yes. Send the ASIN with identifierType asin and the JSON response includes the UPC, EAN, GTIN, and full product record. A free sandbox key covers 10 calls a day.