What it helps you decide
Validate a GTIN-12 and create a printable test barcode.
Free barcode preflight
Check the number and test the barcode in your package layout.
Validate or calculate the GTIN-12 check digit, then create a proportional UPC-A test render with quiet zones for print-layout review.
Start with the example
The values already filled in are a working example—not a recommendation.
- 1Choose the closest starting point.
- 2Replace the example with your real details.
- 3Read the live result and its important limits.
GTIN input
Enter 11 or 12 digits
A valid check digit does not prove GS1 ownership.
Retailers may require a GTIN licensed to and verifiable against your company through GS1. Reseller codes can create ownership and marketplace listing conflicts.
About this free compliance, labels & traceability tool
How to use the GS1 / UPC Packaging Layout Checker
Validate a GTIN-12 and create a printable test barcode. The calculator runs privately in your browser and is designed to make the assumptions behind the answer visible.
What to have ready
Bring the exact formula or product facts, supplier documents, intended market, package details, and the current official source that governs the decision.
How to use the result
Use the output as a documented draft or research aid. Verify it against current requirements and obtain qualified review before printing, selling, or making a safety claim.
Complete workflow guide
US food labeling workflow
A food label starts with the exact recipe and supplier documents—not with a design template. Gather the facts first, then build and review the artwork.
Ready for the connected version?
Turn the calculation into a repeatable workflow.
Batch Scale connects recipes, materials, costs, inventory, production, sales, and your storefront in one workspace.