What size should banner text be?
One inch of letter height for every 10 feet of reading distance — the sign industry's rule of thumb. Size the main message by the farthest reader you care about, and let the details run smaller.
A1" letter
reads at 10 ft
A3" letter
reads at 30 ft
A6" letter
reads at 60 ft
Drawn to relative scale — the farther your reader stands, the taller the letters need to be.
Readable from 10, 20, 50, or 100 feet — that's 1", 2", 5", and 10" letters by the same rule.
Letter height vs. reading distance · the 1-inch-per-10-feet rule (sign-industry charts)| Letter height | Reads comfortably at | Still legible out to |
|---|
| 1" | 10 ft | 50 ft |
| 2" | 20 ft | 75 ft |
| 3" | 30 ft | 100 ft |
| 6" | 60 ft | 200 ft |
| 12" | 120 ft | 525 ft |
| 24" | 240 ft | 1,000 ft |
Two more rules that matter at distance: plain, unserifed lettering stays readable farther than decorative or serifed faces, and dark-on-light contrast beats subtle color pairings. Put the one line you need read from the street in the biggest size, and keep dates and details for the reader who has already walked closer.