# Acres to Square Miles Conversion

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

## How to convert square miles to acres?

As there are 640 acres in 1 square mile, to convert square miles to acres, multiply the square mile value by 640.

For example, to find out how many acres in a half square mile, multiply 0.5 by 640, that makes 320 acres in a half square mile.

1 Square Mile = 640 Acres

## 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 find out how many square miles in 100 acres, divide 100 by 640, that makes 0.15625 square mile in 100 acres.

1 Acre = 0.0015625 Square Mile

What is Acre?

Acre is an imperial and United States Customary area unit. 1 Acre is equal to 0.0015625 square mile. The symbol is "ac".

What is Square Mile?

Square mile is an imperial and United States Customary area unit and defined as a square with all sides are one mile in length. 1 Square mile is equal to 640 acres. The symbol is "mi²".

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.