Convert acres to square miles
Accurate tool to convert between ac and mi²
Area
Acres
The acre is a unit of land area used in the imperial and US customary systems.
Square miles
The square mile is an imperial unit of area.
Formula
To convert from acres to mi2, divide the area by 639.999.
acres (ac)
Description
The acre is a unit of land area used in the imperial and US customary systems.
History
Originally defined as the amount of land a yoke of oxen could plow in one day.
Symbol Origin
From Old English 'æcer', meaning open field.
Usage Context
Used for real estate and large plots of land in the US.
Main Usage
Did you know?
An acre is 43,560 square feet. It can be any shape, not just a square.
mi2 (mi2)
Description
The square mile is an imperial unit of area.
History
Based on the mile.
Symbol Origin
Square of 'mile'.
Usage Context
Used for large geographical areas in the US and UK.
Main Usage
Did you know?
One square mile is equal to 640 acres.
Quick Conversion Table
| acres (ac) | mi2 (mi2) |
|---|---|
| 1 | 0.0015625 |
| 2 | 0.003125 |
| 5 | 0.00781251 |
| 10 | 0.015625 |
| 25 | 0.0390625 |
| 50 | 0.0781251 |
| 100 | 0.15625 |
| 500 | 0.781251 |
| 1000 | 1.5625 |
| 2500 | 3.90625 |
| 5000 | 7.81251 |
| 10000 | 15.625 |
Frequently Asked Questions
How to convert acres to mi2?
To convert from acres to mi2, divide the area by 639.999.
How many mi2 in 1 acres?
1 acres is equal to 0.0015625 mi2.
What is a acres?
The acre is a unit of land area used in the imperial and US customary systems.
What is a mi2?
The square mile is an imperial unit of area.