Signage Letter Height Calculator
Letter height from viewing distance and speed.
Inputs
Results
Min letter height (in)
2
Min letter height (cm)5.08
Stroke width (in)0.33
Max read distance (ft)100
Reading time (sec)999
Max words on sign20
How to Use This Calculator
- Enter Viewing distance (ft), Viewer speed (mph), and Contrast level (1–3).
- Set Illuminated (0/1) and Font style (1–2).
- Review the Min letter height (in) result.
- Use Min letter height (cm) and Stroke width (in) to inform your decision.
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