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UPC-A barcode generator

Enter an 11-digit UPC-A body to calculate its check digit and download the barcode image. You can also validate an existing 12-digit UPC-A before printing.

01 / One barcode

Barcode formatValue

Bar width (px)Height (px) Show value

02 / Batch input

Format for all rowsPaste one value per line

or import a CSV · first column: value, second: optional label

Choose CSV file

Add values to build your label sheet.

03 / Print labels

Print at 100% / actual size. To export a PDF, choose “Save as PDF” in the browser print dialog.

PaperLayoutExtra page offset (mm)

Avery 5160: 2⅝ × 1 in labels on US Letter, 3 columns × 10 rows. Page offset shifts the sheet from the template origin; see print notes below.

Worked example

For a test carton, 03600029145 becomes 036000291452: the weighted digit sum ends in 8, so the check digit is 2.

Before you print

Use this to render a number you are authorized to use, not to assign a product identifier. GS1-licensed GTINs and marketplace eligibility are separate from the bars on this page.

Barcode artwork is not proof of an assigned GS1 number. A free barcode image and a GS1-issued GTIN are different things.