Questions about the sizing of words on your sign? Check out our letter height visibility chart to get started.
| Capital Letter Height | 5/8in | 3/4in | 7/8in | 1in | 1 1/4in | 1 1/2in | 1 3/4in | 2in |
| Maximum Reading Distance | 15ft | 18ft | 21ft | 24ft | 30ft | 36ft | 42ft | 48ft |
| Capital Letter Height | 2 1/2in | 3in | 4in | 6in | 8in | 10in | 12in | 15in |
| Optimum Reading Distance | 25ft | 30ft | 40ft | 60ft | 80ft | 100ft | 120ft | 150ft |
| Maximum Reading Distance | 60ft | 100ft | 150ft | 200ft | 350ft | 450ft | 525ft | 630ft |
| Capital Letter Height | 18in | 24in | 30in | 36in | 42in | 48in | 54in | 60in |
| Optimum Reading Distance | 180ft | 240ft | 300ft | 360ft | 420ft | 480ft | 540ft | 600ft |
| Maximum Reading Distance | 750ft | 1000ft | 1250ft | 1500ft | 1750ft | 2000ft | 2250ft | 2500ft |
*Please note that the above table is for assistance purposes only.
Effective reading distances can be undesirably affected by an arrangement of factors, such as:
Layout
- Colors used
- Contrast between text and background
- Line spacing
- Negative space (blank area around text)
Typeface
- Letter heights
- Decorative fonts, italics, serifs,
- Very light or very bold weights.
- Uppercase, lower case or capitalization
- Kerning (distance between characters)
Sign condition and environment
- Dirt or marks on the sign
- Fog, smoke or airborne dust
- Bent, broken or cracked signage
- Alterations and oversticking
Sign location and lighting conditions
- Viewing angles (horizontal & vertical)
- Levels of illumination
- Glare and back lighting