How to convert square miles to acres
One square mile is 640 acres. To convert square miles to acres, multiply the number of square miles by 640.
Acres = square miles × 640
For example, 5 square miles is 3,200 acres.
Square miles to acres conversion table
| Square miles | Acres |
|---|---|
| 0.5 | 320 |
| 1 | 640 |
| 2 | 1,280 |
| 5 | 3,200 |
| 10 | 6,400 |
| 100 | 64,000 |
About these units
Square miles measure cities, counties and large tracts of land. One square mile is 640 acres.
The acre is the standard unit for land in the United States. It equals 43,560 square feet.
Frequently asked questions
How many acres are in one square mile?
One square mile is 640 acres.
How many square miles are in one acre?
One acre is 0.0015625 square miles. Use the acres to square miles converter to go the other way.
Can I convert to other area units?
Yes. The area converter converts between square feet, square meters, square yards, acres, hectares, square miles and square kilometers.