QR & Barcode
GS1 Check Digit Calculator
Calculate GS1 check digits for GTINs.
Migrated to main site
GS1 Check Digit Calculator
Calculate or validate GS1 Mod-10 check digits for GTIN and SSCC values.
Privacy: QR and GS1 data is processed locally in this browser.
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FAQ
Does GS1 Check Digit Calculator upload my data?
Most main-site tools process input locally in the browser. Website diagnostic tools that request public URLs explain the remote request scope in the tool UI.
Can I use GS1 Check Digit Calculator on mobile?
Tool pages use responsive layouts for phone, tablet, and desktop. Large file processing still depends on device memory and browser limits.
Can I download or copy the GS1 Check Digit Calculator result?
Migrated tools provide copy, download, or direct result views in the output area depending on the tool type.