Square Miles to Acres Converter
1 mi² = 640 ac. Type any value — it converts as you type, right in your browser.
=
640 ac
Formula
ac = mi² × 640
Square Miles to Acres conversion table
| Square Miles (mi²) | Acres (ac) |
|---|---|
| 0.1 | 64 |
| 0.5 | 320 |
| 1 | 640 |
| 2 | 1,280 |
| 5 | 3,200 |
| 10 | 6,400 |
| 20 | 12,800 |
| 50 | 32,000 |
| 100 | 64,000 |
| 500 | 320,000 |
| 1,000 | 640,000 |
FAQ
How many acres in a square mile?
1 mi² equals 640 ac.
How do I convert mi² to ac?
Multiply the square miles value by 640 to get acres.
What is the reverse conversion (ac to mi²)?
1 ac equals 0.0015625 mi². Use our Acres to Square Miles converter for the other direction.