Free ASIN ↔ EAN / GTIN / UPC Converter
Paste any Amazon ASIN, EAN, GTIN, or UPC barcode — we auto-detect the format and convert it. Free GTIN lookup and barcode checker across 15 Amazon marketplaces. No signup for the first 3 lookups per day.
Free preview: 3 lookups per day. Sign up for unlimited access and the full API.
Simple to use
Paste any code
Drop in an ASIN (B0FBHH5BRM), EAN-13 (5702017416663), UPC (012345678905), GTIN-14, or ISBN-13. The tool detects the format automatically — no need to choose a direction.
Pick a country
Select the Amazon marketplace for the lookup. If nothing is found there, we auto-fallback to US → DE → GB → FR so cross-border products still resolve.
Copy the result
Get the matching ASIN or EAN with the product title, image, and marketplace. Copy to clipboard or feed straight into your catalog tooling.
What you get
- Auto-detects ASIN, EAN, GTIN-8, GTIN-12 (UPC), GTIN-13, and GTIN-14
- Bidirectional conversion — ASIN to EAN and EAN to ASIN in the same input box
- Country fallback: auto-retries US, DE, UK, FR when primary marketplace misses
- Covers 15 Amazon marketplaces (US, UK, DE, FR, IT, ES, NL, BE, SE, PL, CA, AU, JP, MX, IN)
- Returns product title and image alongside the converted identifier
- GTIN checksum validation (catches typos before you query)
- Works for books (ISBN-13 is a valid GTIN-13), consumer goods, and private-label
- Free — no credit card, no signup required for the first 3 lookups per day
Glossary: ASIN, EAN, GTIN, UPC, ISBN, JAN — what each identifier means
Product identifiers are the bridge between your catalog and the world's marketplaces. Each has a specific scope, length, and use case. Getting them right is the difference between a listing that rank-matches across channels and one that gets suppressed.
- ASIN (Amazon Standard Identification Number) — 10-character alphanumeric identifier Amazon assigns to every product it lists. Regional: the same physical product can have different ASINs on amazon.com vs amazon.de. Book ASINs are identical to the book's 10-digit ISBN.
- EAN (European Article Number) — 13-digit GTIN barcode used globally for retail products. Sometimes called EAN-13. Fully compatible with GTIN-13 and ISBN-13. Required by bol.com, Coolblue, MediaMarkt, Google Shopping, and most EU marketplaces.
- GTIN (Global Trade Item Number) — umbrella term from GS1 covering GTIN-8, GTIN-12, GTIN-13, and GTIN-14. Any EAN, UPC, ISBN, or JAN is a GTIN under a different name. If a marketplace asks for a 'GTIN', any of these work.
- UPC (Universal Product Code) — 12-digit GTIN used primarily in the US and Canada. Same structure family as EAN, just one digit shorter (add a leading zero to get the equivalent GTIN-13).
- ISBN (International Standard Book Number) — 10- or 13-digit identifier for books. ISBN-13 is a valid EAN / GTIN-13. Amazon stores the ISBN-10 as the ASIN for books, so 'ISBN to ASIN' is effectively a no-op for the older format.
- JAN (Japanese Article Number) — Japan's name for GTIN-13, used on amazon.co.jp and Japanese retailers. Identical structure to EAN-13.
- GTIN-14 — 14-digit variant used for wholesale cases, pallets, and bundles. Bol.com accepts GTIN-14 for case-packs; individual consumer units use GTIN-13.
- MPN (Manufacturer Part Number) — vendor-assigned internal SKU. Not a GTIN. Never unique across brands; always use it paired with brand name, not alone.
How GTIN / EAN / UPC checksums work (and why validation matters)
Every GTIN ends with a check digit — a single digit computed from the previous digits using a GS1 mod-10 algorithm. A valid EAN-13 that fails its checksum is either a typo, OCR error, or fabricated code. Real marketplaces reject invalid checksums silently, which is why 'the code works but Amazon won't list it' is almost always a checksum problem. Our converter validates checksums before querying Amazon so you catch mistakes up front.
- Algorithm: multiply digits alternately by 1 and 3 (from right), sum them, take the nearest multiple of 10 above, and subtract. The remainder is the check digit.
- Example (EAN-13 5702017416663): sum = 117, next multiple of 10 = 120, check digit = 3. Matches.
- Valid lengths: GTIN-8 (8), UPC-A / GTIN-12 (12), EAN-13 / GTIN-13 (13), GTIN-14 (14).
- A GTIN with the wrong checksum is a fake code. Suppliers sometimes generate 'placeholder' EANs with valid format but arbitrary digits — these fail checksum.
- To convert UPC-12 → EAN-13, prepend a '0'. The checksum stays identical. This is why UPC and EAN are interoperable for the US↔EU catalog sync.
- ASIN has no checksum — it's an internal Amazon identifier, not a GS1-standard barcode. Validation only means 'looks like 10 alphanumeric chars'.
ASIN by country: why the same product has different ASINs
Amazon assigns ASINs per marketplace. A product listed on amazon.com gets one ASIN; the same product relisted on amazon.de gets a different ASIN — even though the underlying EAN / GTIN is the same worldwide. This is the #1 reason sellers use an ASIN EAN converter: to resolve the correct regional ASIN when expanding cross-border, or to trace a listing back to its GTIN for multi-channel syndication.
- Amazon US (amazon.com) — ASINs typically start with B0 (e.g. B0FBHH5BRM). Books keep ISBN-10 format.
- Amazon UK (amazon.co.uk) — same B0/B00 prefix convention; region-specific ASIN even for imported EU products.
- Amazon Germany (amazon.de) — ASINs also in B0 family. Often has a different ASIN from amazon.com for identical products due to seller-of-record differences.
- Amazon France, Italy, Spain (amazon.fr / .it / .es) — share inventory infrastructure with amazon.de but each marketplace still issues its own ASIN per listing.
- Amazon Netherlands (amazon.nl) — newer marketplace; catalog coverage is thinner, which is why our fallback tries NL last.
- Amazon Japan (amazon.co.jp) — uses JAN-13 (identical to EAN-13) but assigns separate ASINs. Books map ASIN to ISBN-10 like other marketplaces.
- Amazon Canada, Australia, Mexico, India, Brazil — each issues its own ASIN. Amazon India frequently has unique ASINs for region-specific SKUs (different packaging, voltage, compliance labels).
When you need to convert ASIN to EAN (or EAN to ASIN)
The ASIN EAN converter resolves product identifiers in whichever direction you need. Common reasons sellers and catalog managers reach for this tool:
- Listing Amazon products on other marketplaces: bol.com, Coolblue, MediaMarkt, Kaufland, Google Shopping all require EAN / GTIN — they won't accept ASIN.
- Enriching an internal product database with cross-marketplace identifiers so your repricer, analytics, and BI dashboards can join data across channels.
- Finding the correct ASIN for a product you only have an EAN for — typical when a brand's vendor catalog lists GTIN-13 but the customer searches Amazon.
- Auditing a multi-marketplace catalog: the same EAN should point to the same product across all Amazon regions. Mismatches flag listing errors or hijacked listings.
- Repricing and competitive intelligence: to track a product's price across amazon.com, amazon.de, and bol.com you need all three identifiers linked to a single canonical SKU.
- MAP monitoring: MAP violations typically come from EU retailers but the brand's canonical identifier is an ASIN. Converting between them is daily work for brand-protection teams.
Bulk ASIN / EAN / GTIN lookup via API
The single-lookup tool on this page is free and rate-limited to 3 conversions per day per IP. For catalog-scale conversion, the ShoppingScraper API exposes the same endpoint with no rate limit and full batch support. Typical integrations: nightly catalog sync, enrichment of newly onboarded SKUs, MAP-monitoring pipelines, and repricer backfills.
- REST endpoint accepts ASIN → EAN and EAN → ASIN in the same call; format auto-detected server-side.
- Country parameter maps to all 15 Amazon marketplaces; fallback logic available server-side to reduce no-result rates.
- Response includes product title, image URL, and marketplace metadata so one call replaces three (lookup + scrape + image resolve).
- Webhook callbacks for large batches; typical throughput 50-100 lookups per second on the Advanced plan.
- GTIN checksum validation runs server-side so invalid codes are rejected before they consume a credit.
Frequently Asked Questions
How do I convert an ASIN to an EAN?+
Paste your 10-character Amazon ASIN into the converter. The tool auto-detects it as an ASIN, queries the selected Amazon marketplace, and returns the matching EAN / GTIN-13 along with the product title and image. If nothing is found in your chosen country, we auto-retry on US, Germany, UK, and France.
How do I convert an EAN or GTIN to an ASIN?+
Paste any EAN-13, GTIN-12 (UPC), GTIN-8, or GTIN-14 into the same input box. The tool detects the format automatically and returns the Amazon ASIN for the selected marketplace. Because ASINs are regional, the same EAN can return different ASINs in different countries.
What is the difference between ASIN, EAN, GTIN, and UPC?+
ASIN is Amazon's internal product identifier — 10 alphanumeric characters, unique per marketplace. GTIN (Global Trade Item Number) is the GS1 umbrella term for barcodes. EAN-13 is GTIN-13. UPC is GTIN-12 (used mainly in North America). ISBN-13 is GTIN-13 for books. JAN is GTIN-13 in Japan. One physical product has exactly one GTIN worldwide but many ASINs (one per Amazon marketplace).
How does the auto-detection work?+
The tool inspects what you paste. If it's 10 alphanumeric characters including at least one letter, it's treated as an ASIN. If it's 8, 12, 13, or 14 digits, it's treated as an EAN / GTIN / UPC. Anything else triggers a clear error message so you can correct the input.
What is a GTIN check digit and why does it matter?+
Every GTIN ends with a check digit computed from the preceding digits using GS1's mod-10 algorithm. If the checksum is invalid, the code is a typo or fabricated. Marketplaces reject invalid GTINs silently — meaning your listing fails but you don't see why. Our converter validates the checksum before querying Amazon.
Why does the same product have different ASINs in different countries?+
Amazon issues ASINs per marketplace, not per physical product. A LEGO set listed on amazon.com has one ASIN; relisted on amazon.de it gets a different ASIN — even though the EAN barcode on the box is identical worldwide. This is why bulk cross-border listing needs an ASIN EAN converter.
Which Amazon marketplaces are supported?+
15 marketplaces: United States (amazon.com), United Kingdom (amazon.co.uk), Germany (amazon.de), France (amazon.fr), Italy (amazon.it), Spain (amazon.es), Netherlands (amazon.nl), Belgium (amazon.com.be), Sweden (amazon.se), Poland (amazon.pl), Canada (amazon.ca), Australia (amazon.com.au), Japan (amazon.co.jp), Mexico (amazon.com.mx), and India (amazon.in).
What happens if the product isn't found?+
If your selected marketplace returns no match, the tool automatically retries the US, Germany, UK, and France Amazon marketplaces. If all five fail, you get a clear 'not found' message. This usually means the product isn't listed on any Amazon region, or the ASIN / EAN is incorrect.
Is this tool free to use?+
Yes — 3 free lookups per day per IP, no signup required. For unlimited lookups and batch conversion, create a free ShoppingScraper account. The paid API includes the same endpoint with no rate limit, webhook callbacks, and GTIN checksum validation server-side.
Can I convert ISBN-13 to ASIN for books?+
Yes. ISBN-13 is a valid GTIN-13 — paste it in the same box. Note that Amazon stores the older ISBN-10 as the ASIN for books, so converting an ISBN-10 to ASIN is effectively a no-op (they're the same value). Paste the ISBN-13 to find the current ASIN for regional Amazon marketplaces.
Does this work for UPC-12 codes?+
Yes. UPC is GTIN-12, identical in structure to EAN-13 minus the leading zero. Paste the 12-digit UPC directly or add a leading zero to treat it as EAN-13 — either works. The underlying check digit stays identical across UPC-12 and EAN-13.
Is there an API for bulk conversion?+
Yes. The REST endpoint supports both directions (ASIN → EAN and EAN → ASIN) with a single parameter. Batch throughput is 50-100 lookups per second on the Advanced plan. Webhook callbacks are available for asynchronous large-scale catalog syncs.
Convert ASIN, EAN, GTIN, and UPC codes in bulk
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