# Acres to Square Miles Conversion

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Enter Square Mile
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## How many square miles in an acre?

There is 0.0015625 square mile in an acre. An acre is defined as the area of one chain (0.0125 mile) by furlong (0.125 mile), if you multiply 0.0125 by 0.125, that makes 0.0015625 square mile in an acre.

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

## 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 there are in 100 acres, multiply 100 by 0.0015625, that makes 0.15625 sq miles in 100 acres.

acres to square miles formula

square mile = acre * 0.0015625

square mile = acre / 640

1 Acre = 0.0015625 Square Mile

What is an Acre?

Acre is an imperial and United States Customary area unit. 1 acre = 0.0015625 miles squared. The symbol is "ac".

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.