Bulk UPC-A barcode generator

A batch of UPC-A is a North American product range, and the arithmetic is the same as EAN-13 with one digit fewer: eleven digits of company prefix and item reference, one digit computed. What makes the batch different from a single code is that the eleven digits are usually produced by counting rather than typing — and counting is exactly where the leading zeros go missing.

One value per line. A single line of comma- or semicolon-separated values works too. A header row (like “Value”) counts as a value and will be rejected — leave it out.

Nothing recognized yet.

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Enter a value — the code appears here.

Specification

Character set
digits
Length
exactly 12 characters
Check digit
calculated automatically by the encoder

Need the specification and use cases first? What is UPC-A?

Where this code earns its place in a batch

  • A North American product range: US and Canadian checkouts expect twelve digits, and a batch is how a whole line of SKUs gets registered symbols at once.
  • Ranges that also ship abroad — the same number is EAN-13 with a leading zero, so one run of UPC-A values covers both markets without a second numbering scheme.
  • Private label programmes, where a retailer numbers hundreds of items inside its own prefix and the batch is the numbering exercise itself.

Preparing the list

  • Generate the range with the sequence mode from your GS1 US prefix, letting the twelfth digit be computed for every row.
  • Fix the width of the item reference for the whole batch: eleven digits must stay eleven, and a reference that grows from 001 to 0010 quietly shifts what the prefix means.
  • Keep the batch in UPC-A even for the small items, then decide about UPC-E per product: not every UPC-A qualifies for suppression.

What goes wrong in a batch

  • A spreadsheet turns 012345678905 into 12345678905 by removing the leading zero, and the row is then eleven digits — valid-looking, wrong product.
  • Reusing a number from a discontinued product inside the same batch: retail systems remember the old item long after you stopped shipping it.

Frequently asked questions

Should I generate UPC-E versions in the same run?
Not as a batch. UPC-E exists only for UPC-A numbers whose pattern of zeros allows suppression, so it is a per-product question rather than a whole-range operation. Generate the UPC-A range, then check which items qualify.
How does this differ from a bulk EAN-13 run?
Only in length and market. UPC-A is twelve digits and is expected at North American checkouts; EAN-13 is thirteen and is expected everywhere else. The same number can appear as both, since UPC-A is EAN-13 with a leading zero.

This generator draws a valid UPC-A symbol, but the image alone does not grant the right to sell a product under it in retail. The prefix is issued by GS1 — register it there before printing this code on packaging.