Does this generator assign GS1 numbers?

No. It validates and encodes identifiers supplied by the user. GS1 identifiers for external trade use must come from GS1 or an authorised issuing organisation.

When is an FNC1 separator added?

A separator is added after a variable-length field when another element follows it.

GS1 barcode generator

Validate identification keys and create standards-aware GTIN, SSCC and GS1-128 symbols. All values stay in your browser.

Preview

Human-readable element string: —
Encoded data: —

GS1 data handled by this tool

GTIN and SSCC check digits

Complete identifiers are verified. When the check digit is omitted, the GS1 modulo-10 digit is calculated locally.

Application Identifiers

GS1-128 mode supports GTIN (01), expiration date (17), batch/lot (10) and serial number (21), including FNC1 separation after variable fields.

GTIN, EAN or UPC?

Use the practical format guide to choose the correct retail identifier and barcode symbol.

Authoritative reference

Review the complete rules and additional identifiers in the GS1 Application Identifier registry.