Letter Visibility Chart

Letter Height (Inches) Distance For Best Impact Maximum Readable Distance
3" 30' 100'
4" 40' 150'
6" 60' 200'
8" 80' 350'
9" 90' 400'
10" 100' 450'
12" 120' 525'
15" 150' 630'
18" 180' 750'
24" 240' 1000'
30" 300' 1250'
36" 360' 1500'
42" 420' 1750'
48" 480' 2000'
54" 540' 2250'
60" 600' 2500'