This depends on what the final output size will be, and its viewing distance.
Please reference our Scale & Resolution Example Chart and Letter Visibility Chart below:
|
LETTER HEIGHT |
MAX IMPACT DISTANCE |
MAX READABLE DISTANCE |
|---|---|---|
|
3 inch |
30 feet |
60 feet |
|
4 inch |
40 feet |
150 feet |
|
6 inch |
60 feet |
200 feet |
|
8 inch |
80 feet |
350 feet |
|
9 inch |
90 feet |
400 feet |
|
10 inch |
100 feet |
450 feet |
|
12 inch |
120 feet |
525 feet |
|
15 inch |
150 feet |
630 feet |
|
18 inch |
180 feet |
750 feet |
|
24 inch |
240 feet |
1000 feet |
|
30 inch |
300 feet |
1250 feet |
|
36 inch |
360 feet |
1500 feet |
|
42 inch |
420 feet |
1750 feet |
|
48 inch |
480 feet |
2000 feet |
|
54 inch |
540 feet |
2250 feet |
|
60 inch |
600 feet |
2500 feet |
This is based on dark text on a plain white background in clear weather conditions
There is an approximate 10% variance when using various color combinations.