Online calculator to convert acres to square miles (ac to mi2) with formulas, examples, and tables. Our conversions provide a quick and easy way to convert between Area units.
Conversion Calculator
Enter your value in the conversion calculator below.
Convert acres to mi2
TIP: If the result of your conversion is 0, try increasing the "Decimals".
Conversion Definitions
The following is a list of definitions relating to conversions between acres and square miles.
What is an acre (ac)?
An acre is a unit of area in both US Customary Units as well as the Imperial System. The symbol for acre is ac. There are 640 acres in a square mile.
What is a square mile (mi2)?
A square mile is a unit of area in both US Customary Units as well as the Imperial System. The symbol for square mile is mi2 or sq mi. There are 0.0015625 square miles in an acre. A square mile is calculated as the area of a square that has 1 mile on each side.
Conversion Formula
Let's take a closer look at the conversion formula so that you can do these conversions yourself with a calculator or with an old-fashioned pencil and paper.
The formula to convert from acres to mi2 is:
mi2 = acres ÷ 640
Conversion Example
Next, let's look at an example showing the work and calculations that are involved in converting from acres to square miles (ac to mi2).
Acres to Square Mile Conversion Example
Task: Convert 7,500 acres to square miles (show work) Formula: acres ÷ 640 = mi2 Calculations: 7,500 acres ÷ 640 = 11.71875 mi2 Result: 7,500 acres is equal to 11.71875 mi2
Conversion Table
For quick reference purposes, below is a conversion table that you can use to convert from acres to mi2.
Acres to Square Miles Conversion Chart
acres (ac) | square miles (mi2) |
---|---|
1 acres | 0.0015625 mi2 |
2 acres | 0.003125 mi2 |
3 acres | 0.0046875 mi2 |
4 acres | 0.00625 mi2 |
5 acres | 0.0078125 mi2 |
6 acres | 0.009375 mi2 |
7 acres | 0.0109375 mi2 |
8 acres | 0.0125 mi2 |
9 acres | 0.0140625 mi2 |
10 acres | 0.015625 mi2 |
20 acres | 0.03125 mi2 |
30 acres | 0.046875 mi2 |
40 acres | 0.0625 mi2 |
50 acres | 0.078125 mi2 |
75 acres | 0.1171875 mi2 |
100 acres | 0.15625 mi2 |
250 acres | 0.390625 mi2 |
500 acres | 0.78125 mi2 |
750 acres | 1.171875 mi2 |
1,000 acres | 1.5625 mi2 |
2,500 acres | 3.90625 mi2 |
5,000 acres | 7.8125 mi2 |
7,500 acres | 11.71875 mi2 |
10,000 acres | 15.625 mi2 |
25,000 acres | 39.0625 mi2 |
50,000 acres | 78.125 mi2 |
75,000 acres | 117.1875 mi2 |
100,000 acres | 156.25 mi2 |
250,000 acres | 390.625 mi2 |
Advertisements