Convert GTINs (Global Trade Item Numbers) to Amazon ASINs. GTIN is the umbrella term for UPC, EAN, and ISBN barcodes. Enter any barcode to find its Amazon listing.
Also convert UPCs, EANs, or ISBNs
Last updated: February 2026
Enter your GTIN (UPC, EAN, or ISBN) below to find the matching Amazon ASIN for free. No sign up required!
Need to convert a list of GTINs to ASINs? Upload your CSV or XLSX list to Rocket Source today and save hours of manual searching.
More than just GTIN to ASIN conversion, Rocket Source allows you to stay competitive with up-to-date buybox pricing, sales ranks, FBA fees, competitor information and much, much more. The data we provide can give you an edge over your competition, helping you to make smarter sourcing and pricing decisions.
Sign up for our 100% free Startup plan today and start converting up to 50,000 GTINs to ASINs per week.
A: GTIN (Global Trade Item Number) is an umbrella term for product identification codes including UPC (12 digits, North America), EAN (13 digits, international), and ISBN (books). All these barcodes can be converted to Amazon ASINs.
A: Rocket Source can support even the most demanding needs. Our Scale plan is capable of running lists of hundreds of thousands of products without skipping a beat. However, free plans are limited to just one scan of up to 50k GTINs per week.
A: All of them! We support all Amazon marketplaces including US, CA, MX, UK, DE, FR, IT, ES, NL, SE, PL, AU, JP, SG, AE, SA, IN, TR, EG, and BR.
A: We provide 90+ data points including the converted ASIN, pricing information, BSR (Best Seller Rank), competitor data, FBA fees, and profitability calculations.
A: UPC is a 12-digit barcode used primarily in North America. EAN is a 13-digit barcode used internationally. GTIN is the umbrella term that encompasses both UPC and EAN, as well as ISBN codes for books. Our converter accepts all formats.
A: Not all products with barcodes are listed on Amazon. If we can't find a matching ASIN, it may mean the product isn't currently available on Amazon or uses a different identifier.
Need programmatic access? Use our API to convert thousands of GTINs to ASINs automatically.
cURL
curl -X POST "https://app.rocketsource.io/api/v3/convert" \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{"marketplace": "US", "ids": ["190199246850"]}'JavaScript
const response = await fetch(
'https://app.rocketsource.io/api/v3/convert',
{
method: 'POST',
headers: {
'Authorization': 'Bearer YOUR_API_KEY',
'Content-Type': 'application/json'
},
body: JSON.stringify({
marketplace: 'US',
ids: ['190199246850']
})
}
);
const data = await response.json();