Code 11 generator
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Need many at once? Bulk Code 11 generator
About Code 11
Code 11 is a numeric-only symbology once used heavily in telecommunications equipment labelling. It supports up to two check digits but no longer sees widespread use.
Valid input
- Numeric only plus the dash character.
- One or two mod-11 check digits are appended depending on payload length (two for 10 or more digits).
Related barcode types
Guides
- How to Print Barcode Labels That Actually Scan
DPI, X-dimension, quiet zone, and the handful of print settings that decide whether your label works. A practical guide for anyone printing labels at real volume.
- Why Won't My Barcode Scan? A 7-Step Checklist
A checklist for diagnosing barcode scan failures, covering quiet zones, contrast, print resolution, physical damage, wrong symbology, check digits, and scanner distance.