It really does vary from map to map, so can't help you there
On A Map Drawn To Scale, 1/2 Inch Equals 1 Mile. What Length On The Map Equals 5 Miles?
I need info on a map scale?
2.5 inches.
2.5
2 1/2 inches = 5 miles on a map that is scaled to 1/2" = 1 mile.
Multiply the scale measurement for 1 mile (1/2 inch per mile) by 5 miles: 1/2 × 5 or 1/2 × 5/1 = 5/2. Reduce this fraction, and you get 2.5 inches. :)