Formula
At 1:24,000, 1 inch on the map is 24,000 inches in reality, or 2,000 feet. Real distance = map distance × scale denominator.
Example
3 inches on a 1:24,000 topo map is 6,000 feet, about 1.14 miles.
Common scales
- 1/4" = 1' (1:48) – house plans.
- 1:24,000 – USGS 7.5-minute topo maps.
- 1:1,000,000 or smaller – state and country maps.
Frequently asked questions
Large or small scale?
A large scale (1:1,000) shows a small area in detail; a small scale (1:1,000,000) shows a large area with little detail.
What about a bar scale?
Measure the bar and what it represents to work out the ratio.
See also
Results are estimates for information only and are not financial, legal or medical advice. Rates, taxes and fees vary — confirm with a professional or your lender.