Letter visibility chart

The information presented in this chart is based on lettering using the font Helvetica as black text on a white background in a composition using optimal negative space seen in natural lighting. This condition represents a sign with maximum legibility. Factors that would decrease the legibility of the sign are: font selection, color choice, lighting, negative space, and other environmental factors.

Upper & Lower Case

All Capitals

Letter Height Maximum Legible Distance
0.5' 14'
0.75' 22'
1' 29'
1.25' 36'
1.5'​ 43'​
1.75' 51'
2' 58'
2.5' 72'
3' 87'
3.5' 101'
4' 116'
4.5' 120'
Letter Height Maximum Legible Distance
5' 145'
6' 174'
8' 232'
10' 290'
12' 348'
16' 464'
18' 522'
20' 580'
24' 696'
30' 870'
36' 1044'
48' 1392'
Letter Height Maximum Legible Distance
0.5' 12'
0.75' 19'
1' 25'
1.25' 31'
1.5'​ 37'
1.75' 43'
2' 50'
2.5' 62'
3' 75'
3.5' 87'
4' 100'
4.5' 112'
Letter Height Maximum Legible Distance
5' 125'
6' 150'
8' 200'
10' 250'
12' 300'
16' 400'
18' 450'
20' 500'
24' 600'
30' 750'
36' 900'
48' 1200'