Square mile (mi²)
A square one international mile on each side.
What is a square mile?
- Symbol
- mi²
- Quantity
- Area
- Unit system
- US customary
- Definition
- A square one international mile on each side.
- Exact
- Yes, the value is exact by definition
- Source
- International yard and pound agreement (1959)
Common applications
Used in the United States and the United Kingdom for the area of cities, counties and states.
Square mile in other area units
- 1 mi² = 2589988110336 mm²Square millimeter
- 1 mi² = 25899881103.36 cm²Square centimeter
- 1 mi² = 2589988.110336 m²Square meter
- 1 mi² = 258.9988110336 haHectare
- 1 mi² = 2.589988110336 km²Square mile to Square kilometer converter
- 1 mi² = 4014489600 in²Square inch
- 1 mi² = 27878400 ft²Square foot
- 1 mi² = 3097600 yd²Square yard
- 1 mi² = 640 acAcre
Square mile quick reference
| Square mile | Square kilometer | Square meter | Square foot |
|---|---|---|---|
| 1 mi² | = 2.589988110336 km² | = 2589988.110336 m² | = 27878400 ft² |
| 10 mi² | = 25.89988110336 km² | = 25899881.10336 m² | = 278784000 ft² |
| 100 mi² | = 258.9988110336 km² | = 258998811.0336 m² | = 2787840000 ft² |
| 1000 mi² | = 2589.988110336 km² | = 2589988110.336 m² | = 27878400000 ft² |
Where the square mile fits
The next smaller area unit is the square kilometer (km²). 1 mi² = 2.589988110336 km², and 1 km² ≈ 0.3861021585 mi².
Frequently asked questions
- How many square kilometers are in one square mile?
- One square mile = 2.589988110336 km² (square kilometers).
- How many square meters are in one square mile?
- One square mile = 2589988.110336 m² (square meters).
- How many square feet are in one square mile?
- One square mile = 27878400 ft² (square feet).