Acre to Square Mile Converter
Convert acre to square mile instantly.
Standard area units
square meter 404685.642
square kilometer 0.4047
square foot 4356000
square mile 0.1563
hectare 40.469
Fun comparisons
parking spaces 🅿️~ 26979.04
tennis courts 🎾~ 1551.29
football fields 🏈~ 75.63
Central Parks 🌳~ 0.12
How to convert acre to square mile
Enter your area in acre and get the equivalent in square mile instantly. The converter includes real-world comparisons - like football fields and tennis courts - to help you visualize the space.
Acres and square miles are both US land area units - one square mile contains exactly 640 acres. This conversion is used in US real estate, farming and geographic area descriptions.
Need the opposite direction? Convert square mile to acre just as easily, or explore all our area conversions.
Common acre to square mile conversions
| Acre (ac) | Square Mile (mi²) |
|---|---|
| 1 | 0.0015625 |
| 5 | 0.0078125 |
| 10 | 0.015625 |
| 25 | 0.0390625 |
| 50 | 0.078125 |
| 100 | 0.15625 |
| 500 | 0.78125 |
| 1000 | 1.5625 |
Frequently asked questions
1 acre equals 0.0015625 square mile.
Multiply by 0.0015625. For example, 5 ac = 0.0078125 mi².
1280 acres equals exactly 2 square miles.
1 square mile equals 640 acre.
100 acre equals 0.15625 square mile.