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 Miles | Acres |
|---|---|
| 1 | 640 |
| 2 | 1,280 |
| 5 | 3,200 |
| 10 | 6,400 |
| 100 | 64,000 |
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.
Related tools
m
Length
Convert between meters, feet, inches, miles, kilometers, and more.
L
Volume
Convert between liters, gallons, cups, tablespoons, fluid ounces, and more.
kg
Weight
Convert between kilograms, pounds, ounces, stone, grams, and more.
#
Color Picker & Converter
Pick a color and convert between HEX, RGB, HSL, OKLCH, and CMYK