1 square miles to acres
1 square mile equals
640 acres
1 mi² = 640 ac
How to convert square miles to acres
One square mile equals 640 acres. To convert, multiply the number of square miles by 640:
acres = square miles × 640
acres = 1 × 640 = 640
acres = 1 × 640 = 640
square miles to acres conversion table
| square miles (mi²) | acres (ac) |
|---|---|
| 0.5 | 320 |
| 1 | 640 |
| 2 | 1,280 |
| 3 | 1,920 |
| 5 | 3,200 |
| 10 | 6,400 |
Frequently asked questions
How many acres are in 1 square mile?
1 square mile equals 640 acres. To convert square miles to acres, multiply the number of square miles by 640.
What is the formula to convert square miles to acres?
acres = square miles × 640. One square mile equals 640 acres.
How do I measure land area in acres?
Use the free LandLens area converter or the LandLens app to measure any plot with your phone's GPS and read the result in acres, square miles, or any other unit.
Related conversions
Measure land in any unit
Walk a perimeter or tap a satellite map to measure any area with GPS — read it in acres, hectares, square feet and more.