Acres to Square Miles Conversion

Round:
Enter Acre
Enter Square Mile
Calculate Area
mi
×
mi

To convert acres to square miles (ac to sq mi), you may use the acres to square miles converter above. To calculate the area in square miles and convert into acres at the same time, you may enter the dimensions in miles.

Below, you will find information of how to find out how many square miles there are in "x" acres, including the formulas and example conversions.

How to convert acres to square miles?

1 Acre is equal to 0.0015625 square mile. To convert acres to square miles, multiply the acre value by 0.0015625 or divide by 640.

For example, to convert 1000 acres to square miles, divide 1000 by 640, that makes 1.5625 square miles in 1000 acres.

acres to square miles formula

square mile = acre * 0.0015625

square mile = acre / 640

How to convert square miles to acres?

1 Square mile is equal to 640 acres. To convert square miles to acres, multiply the square mile value by 640.

For example, to convert 5 square miles acres, multiply 5 by 640, that makes 3200 acres in 5 square miles.

square miles to acres formula

acre = square mile * 640

What is an Acre?

Acre is an imperial and United States Customary area unit. 1 Acre = 0.0015625 Sq Mile. The symbol is "ac".

Common conversions from acres to square miles:

  • 1 acre = 0.0015625 sq mile
  • 40 acres = 0.0625 sq mile
  • 50 acres = 0.078125 sq mile
  • 100 acres = 0.15625 sq mile
  • 500 acres = 0.78125 sq mile
  • 1000 acres = 1.5625 sq miles

What is a Square Mile?

Square mile is an imperial and United States Customary area unit. 1 Sq Mile = 640 Acres. The symbol is "mi²".

Please visit all area units conversion to convert all area units.

Create Conversion Table
Click "Create Table". Enter a "Start" value (5, 100 etc). Select an "Increment" value (0.01, 5 etc) and select "Accuracy" to round the result.