Select the best letter size for your sign

There are two primary factors that determine the best letter size for your sign: distance and speed. Our Letter Sizing Calculator simplifies the math for you.

Distance: Enter the viewing distance (how far away you want your sign to be readable). Our calculator will calculate the minimum readable letter size. It will also provide the recommended letter size for readability.

Speed: Enter the speed limit on your street and the number of seconds you want your sign to be readable. Our calculator will calculate the minimum readable letter size. It will also provide the recommended letter size for readability.

 

Letter Size

 

How far can you read a 4” tall letter? Or any other size letter for that matter? To find out the answer, just select the letter size from the dropdown list bellow.


Maximum Viewable Distance

100 ft

Distance for Easy Readability

30 ft
 

Distance

 

All you do is put in the viewing distance. And the calculator will automatically show you how big your letters should be.

Minimum Readable Letter Size

Recommended for Easy Readability

 

Speed

 

Let’s suppose the speed limit on your street is 45 MPH. And you want your message to be readable for 3 full seconds by passing motorists.

5
21 ft

Minimum Readable Letter Size

1"

Recommended Size for Readability

3"

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