UPC Barcode and
Label Guides
Plain-English help for small sellers who print their own barcode labels. Every guide links back to the tool it supports.
New to UPC labels? Start here
Printing
Get the size right and print labels that scan the first time.
Barcode numbers
Where UPC numbers come from and how they relate to EAN, SKU and Amazon FNSKU.
- How to get a UPC code GS1 single GTIN or company prefix, what each costs, and why resold numbers cause trouble. Read guide
- UPC vs EAN vs SKU (and GTIN) What each number is, who issues it, how many digits it has and which one goes on your label. Read guide
- UPC vs FNSKU for Amazon Which barcode lists the product, which one labels each FBA unit, and the March 2026 rule change. Read guide
Tools
Free, in your browser, no sign-up.
- UPC label generator One product: type a UPC, get a print-ready label.
- Bulk barcode generator Many products in one PDF from a pasted list.
- Barcode generator from Excel Upload a spreadsheet of UPCs and names.
- UPC validator & check digit calculator Check digits and missing leading zeros.
- Label sizes Every supported sheet and roll, with calibration.
Ready to print your labels?
Type a UPC, pick your label size and download a print-ready PDF. Free, and no sign-up.
Create your first label freeFree forever for single and bulk labels. No account needed.