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Unit converter

Area Converter

Convert between square meters, square feet, acres, hectares, and more.

Square Miles to Acres

1 Square Mile = 640 Acres
640

About these units

Square Miles

The square mile equals about 2.59 square kilometers and is used for large land areas and administrative regions in the US.

Acres

The acre is an imperial unit equal to about 4,047 square meters, traditionally the area a yoke of oxen could plow in a day. It's common in US and UK land measurement.

Conversion formula

To convert Square Mile to Acre, multiply the value by 640.

Quick reference

Square MilesAcres
1640
21,280
53,200
106,400
10064,000

Frequently asked questions

How many Acres are in one Square Mile?
1 Square Mile = 640 Acres.
How many Square Miles are in one Acre?
1 Acre = 0.0015625 (1.5625 × 10⁻³) Square Miles.

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