Acre to Square Mile (ac to mi²) Conversion
The acre (ac) and the square mile (mi²) are both units used to measure area in the imperial and US customary systems. They are commonly used for land measurement in the United States, United Kingdom, and other countries that utilize these measurement systems. Understanding how to convert acres to square miles is essential in fields like real estate, land development, and agriculture.
Understanding the Units
An acre is defined as an area covering 43,560 square feet. Historically, it represents the amount of land tillable by one man behind an ox in one day. A square mile, on the other hand, is the area of a square with sides one mile in length, encompassing 640 acres.
Conversion Formula
Square Miles (mi²) = Acres (ac) ÷ 640
Example Conversion
If you have 1,280 acres of land, you can convert it to square miles by dividing by 640:
1,280 ac ÷ 640 = 2 mi²
Therefore, 1,280 acres equal 2 square miles.
This simple conversion is useful for large-scale land assessments, planning, mapping, and real estate transactions where land areas need to be expressed in different units for clarity or compliance with regulations.