GTIN (01)
Enter a GTIN with locally checked structure.
GS1 Barcode Generator
Build GS1-128 or GS1 Data Matrix from structured GTIN, expiry, batch or lot and serial fields, then locally verify the generated output.
Validate
Check a barcode value or build standards-aware GS1 data.
For EAN, UPC or GTIN, enter the complete value to verify it or omit the final digit to calculate it. Spaces and hyphens are ignored for those standards.
Your validation result appears here.
Validation result
- Expected check digit
- Received check digit
Required. Valid shorter GTINs are zero-padded to 14 digits; 13 GTIN-14 data digits receive a calculated check digit.
Parentheses identify Application Identifiers in the readable text; they are not encoded as data. Required FNC1 separators are inserted automatically.
Syntax and checks can confirm a well-formed value, not whether a GTIN was assigned to your organisation.
Enter a GTIN to build a GS1 code.
Check these fields
Verifying generated output…
- Human-readable AI data
- Scanner element string
Processed locally. GS1 fields and generated values stay in this browser.