Convert acre to square mile (US survey)
acre
Definition: An acre (symbol: ac) is a unit of land area used in the imperial and US customary systems. It is defined as the area of 1 chain (66 feet) by 1 furlong (660 feet), which is exactly equal to 1/640 of a square mile, 43,560 square feet, or exactly 4046.8564224 square meters.
History/origin: In the Middle Ages, the acre was defined as the area that a yoke (pair) of oxen could typically plow within one day, using a wooden plow. Before the metric system was adopted, many countries used their own versions of the acre. The most commonly used acre today, the international acre, is based on the international yard, which was defined in 1959.
Current use: Acres are used in countries including the United States, the UK, Ghana, India, Canada, and others. The United States (US) uses both international as well as US survey acres (~4047 square meters), which vary based on which type of yard is used in the measurement. However, area measurements are typically not accurate enough for the difference between the two acre measurements to be detectable.
square mile (US survey)
Definition: Square mile (US survey) is a measure of area, the extent of a two-dimensional surface. For conversion purposes, its value is 2589998.4703195 times the reference unit, square meter.
acre to square mile (US survey) Conversion Table
| acre [ac] | square mile (US survey) [survey)] |
|---|---|
| 0.01 acre | 0.000016 square mile (US survey) |
| 0.10 acre | 0.000156 square mile (US survey) |
| 1 acre | 0.001562 square mile (US survey) |
| 2 acre | 0.003125 square mile (US survey) |
| 3 acre | 0.004687 square mile (US survey) |
| 5 acre | 0.007812 square mile (US survey) |
| 10 acre | 0.0156 square mile (US survey) |
| 20 acre | 0.0312 square mile (US survey) |
| 50 acre | 0.0781 square mile (US survey) |
| 100 acre | 0.1562 square mile (US survey) |
| 1000 acre | 1.56 square mile (US survey) |
How to Convert acre to square mile (US survey)
1 acre = 0.001562 square mile (US survey)
1 square mile (US survey) = 640.00 acre
Example
Convert 15 acre to square mile (US survey):
15 acre = 15 × 0.001562 square mile (US survey) = 0.023437 square mile (US survey)
