Check a barcode number, then print it
Check a barcode number, then print it — one goal, 2 tools, no signup needed to look around.
Do it in these steps
- 1
Step 1
GTIN, UPC & EAN CheckCheck barcode numbers in bulk: valid length, correct check digit, and which GS1 member organisation issued the prefix.
1 ⚡
When step 1 finishes, paste its result into Barcode Generator — that is why this is a two-step job.
- 2
Start with step 1 right here
GTIN, UPC & EAN Check
Check barcode numbers in bulk: valid length, correct check digit, and which GS1 member organisation issued the prefix.
How the check works
GTIN-8, UPC-12, EAN-13 and GTIN-14 all end in a check digit: multiplying the digits alternately by 3 and 1 from the right and adding them up must land on a multiple of ten. The prefix table is the GS1 one, read from gs1.org on 2026-09-28. GS1 states on that same page that a prefix does not tell you where a product was made, only which member organisation issued the number.
A sanity check before you buy or upload a number, not a GTIN licence: only the GS1 member organisation that issued a prefix can confirm who owns it.
Numbers are checked in your browser and never uploaded.
How it works
This utility runs locally in your browser for privacy and speed.
1 ⚡
Unlimited local toolsThis run costs 1 credit(s) and is saved to your history automatically.
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Frequently asked questions
- Do I need an account?
- You can browse and read everything without an account. Signing up takes a minute and gives you 3 free credits to run the tools.
- Are my files uploaded?
- Tools marked as browser-local run entirely on your device — nothing is uploaded. AI tools send only the text or image you submit for that single run.