Convert Acres (ac) to Square Miles (mi²)
Enter a value below to convert Acres (ac) to Square Miles (mi²).
Conversion:
1 Acres (ac) = 0.0015625 Square Miles (mi²)
How to Convert Acres (ac) to Square Miles (mi²)
1 ac = 0.0015625 mi2
1 mi2 = 640 ac
Example: convert 15 Acres (ac) to Square Miles (mi²):
25 ac = 0.0390625 mi2
Acres (ac) to Square Miles (mi²) Conversion Table
| Acres (ac) | Square Miles (mi²) |
|---|---|
| 0.01 ac | 0.000015625 mi2 |
| 0.1 ac | 0.00015625 mi2 |
| 1 ac | 0.0015625 mi2 |
| 2 ac | 0.003125 mi2 |
| 3 ac | 0.0046875 mi2 |
| 5 ac | 0.0078125 mi2 |
| 10 ac | 0.015625 mi2 |
| 20 ac | 0.03125 mi2 |
| 50 ac | 0.078125 mi2 |
| 100 ac | 0.15625 mi2 |
| 1000 ac | 1.5625 mi2 |
Acres (ac)
Definition
An acre (ac) is an imperial unit of area equal to 43,560 square feet, 4,840 square yards, or approximately 4,046.86 square meters (about 0.4047 hectares).
History
The acre originated in medieval England as the amount of land a yoke of oxen could plow in one day. It was later standardized and remains one of the most recognizable land measurement units in English-speaking countries.
Current use
Acres are widely used for measuring land in the United States, the United Kingdom, Canada, and other countries with historical ties to the British imperial system. Real estate, farming, and forestry commonly reference acres.
Square Miles (mi²)
Definition
A square mile (mi²) is an imperial unit of area equal to the area of a square with sides of 1 mile. It equals 640 acres or approximately 2.59 square kilometers.
History
The square mile has been used since the establishment of the statute mile in England. As settlements expanded, the square mile became the standard for measuring large tracts of land, counties, and states.
Current use
Square miles are used primarily in the United States and the United Kingdom to express the area of cities, counties, states, and natural parks. Population density is often stated in people per square mile.