Square Miles To Acres Unit Conversion

Square Miles = Acres × 0.0015625

The acre is one of the most common units used to measure large land areas. It belongs to the imperial and US customary systems. By definition, 1 acre is equal to 1/640 of a square mile.

Interestingly, in the medieval era, the term acre was used for the piece of land that a farmer could plough with an ox in a single day. Today, the acre is widely used in countries like India, USA, Canada, UK, and Ghana. It is usually denoted as ac, for example, 1 acre = 1 ac.

On the other hand, the square mile (denoted as mi² or sq. mi) is a much larger unit of area. It represents the area of a square with each side measuring one mile. 1 square mile is equal to 640 acres, and it is typically used to measure very large areas like the size of cities, states, or countries.

Conversion Formula: Acre to Square Mile

To convert acres into square miles, use the following formula:

Square Miles = Acres × 0.0015625

Example

Let’s convert 100 acres into square miles:

100 acres × 0.0015625 = 0.15625 square miles

So, 100 acres of land is equal to about 0.156 sq. mi.