What is a square mile?
Definition
mi²
The square mile (mi²) is an imperial unit of area equal to 640 acres or approximately 2.59 km².
Unit system
Imperial / US
Convert square miles
All area units
| Unit | Symbol | System |
|---|---|---|
| square millimeters | mm² | Metric |
| square centimeters | cm² | Metric |
| square meters | m² | Metric |
| hectares | ha | Metric |
| square kilometers | km² | Metric |
| square inches | in² | Imperial / US |
| square feet | ft² | Imperial / US |
| square yards | yd² | Imperial / US |
| acres | ac | Imperial / US |
| square miles | mi² | Imperial / US |