Visibility Information
Proper Sign Distance for Optimal Visibility
You may have a great looking sign, but what if your potential customers can’t make out what it’s supposed to mean? Ensuring that potential customers can view and understand your message is vital to your businesses success. Below is a chart that advises on the appropriate letter height for readability at certain distances.
Distances may vary by up to 10% depending on color combinations. For any sign height at maximum impact, the font size at 3ft away from the screen is 21.6pt, and for maximum readable distance, it’s 4.94pt. How’d we figure out this example? Here’s the simple formula:
Letter height ÷ (Distance from sign ÷ Distance from screen) X 72 = FONT SIZE
It may look confusing, but we’ll break it down:
• The letter height is any number from column 1 in the chart above (make sure it's in inches).
• Distance from sign is the corresponding number in columns 2 or 3, or whatever number you want to try (keep this in feet).
• Distnace from screen is how far away you are from your screen (or paper, if printed) in a measurement of feet.
• The 72 comes from a conversion of inches to points, the most common scale for text sizes. The actual cumber is 71.999999, but who wants to type that?
• Do what's in parenthesis frist, round your answer to 2 decimal places, and you'll have the correct size to test out any font.
Word will not accept decimals in font sizes, but most image-editing software should. Remember, all screens render text differently, so it’s best practice to print out the text to get a better idea of what it’ll look like at that certain letter height at that distance. Just hold the paper the same distance away as you were from the screen.
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