UPC-A check digit

Client

Validate 12-digit UPC-A GTIN check digit.

Expected check 8: 036000291452

Nearby workflows on Toolcore

  • Linear code generator — Create EAN-13, EAN-8, Code 128, and UPC-A linear barcodes in your browser—PNG/SVG export, GS1 check digit auto-fill, no upload. after you export or copy from the media workspace.
  • EAN-13 barcode check — Validate 13-digit EAN/GTIN check digit for retail barcodes. after you export or copy from the media workspace.
  • UPC-A checker — Validate 12-digit UPC-A (GTIN-12) mod-10 check digit. after you export or copy from the media workspace.
  • GTIN checksum (EAN / UPC) — Paste GTIN‑8, UPC‑A (GTIN‑12), EAN‑13, or logistic GTIN‑14 digits—ISO GS1 modulus‑10 parity without GS1 lookup—browser-only. after you export or copy from the media workspace.

About this tool

North American retail UPC beside EAN-13 checks.

Common use cases

  • UPC-A check digit for quick local checks without uploading data.
  • Copy results into tickets, docs, or classroom notes.

Common mistakes to avoid

  • Unexpected input shape

    See the intro and how-to notes for accepted formats.

FAQ

Is processing local?

Yes—this runs entirely in your browser.

Agent prefill?

Use q or qb for the main text field when supported.

More tools

Related utilities you can open in another tab—mostly client-side.