Square Miles to Acres Converter
Instantly convert Square Miles (mi²) to Acres (ac). Free online converter with formula and table.
1 Square Mile = 640 acres
1 Acre = 0.0015625 square miles
Square Miles to Acres Conversion Table
| Square Miles (mi²) | Acres (ac) |
|---|---|
| 1 | 640 |
| 2 | 1,280 |
| 3 | 1,920 |
| 4 | 2,560 |
| 5 | 3,200 |
| 10 | 6,400 |
| 15 | 9,600 |
| 20 | 12,800 |
| 25 | 16,000 |
| 50 | 32,000 |
| 100 | 64,000 |
| 500 | 320,000 |
| 1,000 | 640,000 |
How to Convert Square Miles to Acres
ac = mi² × 640Example
Convert 10 square miles to acres:
10 mi² × 640 = 6,400 acPopular Square Mile to Acre Conversions
About These Units
Frequently Asked Questions
How many Acres are in a Square Mile?
There are 640 Acres in one Square Mile.
How do I convert Square Miles to Acres?
To convert Square Miles to Acres, multiply the value in Square Miles by 640. For example, 10 Square Miles = 10 × 640 = 6,400 Acres.
What is the formula to convert Square Miles to Acres?
The formula is: Acres (ac) = Square Miles (mi²) × 640
How do I convert Acres back to Square Miles?
To convert Acres to Square Miles, multiply by 0.0015625 (or divide by 640).