Square Miles to Square Kilometers Converter
Convert mi² to km² instantly. Enter a value below.
Formula
Square Miles to Square Kilometers table
| Square Miles (mi²) | Square Kilometers (km²) |
|---|---|
| 1 mi² | 2.59 km² |
| 5 mi² | 12.95 km² |
| 10 mi² | 25.8999 km² |
| 25 mi² | 64.7497 km² |
| 50 mi² | 129.4995 km² |
| 100 mi² | 258.999 km² |
| 250 mi² | 647.4975 km² |
| 500 mi² | 1,294.995 km² |
| 1000 mi² | 2,589.99 km² |
About Area conversions
Area conversions matter in real estate, agriculture, construction, and mapping. Square footage (sq ft) dominates US real estate listings, while the rest of the world uses square meters (m²). This trips up international buyers comparing property sizes: 100 m² equals 1,076 sq ft — so a "1,000 sq ft apartment" in the US is just 92.9 m², which sounds small in European terms.
In agriculture, US farmers use acres while international farming uses hectares. 1 hectare = 2.471 acres = 10,000 square meters. A standard American football field including end zones is about 0.537 hectares (1.32 acres). For very large areas like national parks or countries, the units switch to square miles or square kilometers — 1 square mile = 2.59 km².
For home improvement, knowing area conversions helps estimate paint, flooring, and tile coverage. Paint typically covers 350–400 sq ft per gallon (33–37 m² per 3.79 L). Flooring specs may list coverage in either system depending on where the product is manufactured.
Frequently asked questions
How many square feet are in a square meter?▾
1 square meter equals 10.764 square feet. To convert m² to sq ft, multiply by 10.764. To convert sq ft to m², divide by 10.764 (or multiply by 0.0929). Example: a 500 sq ft studio apartment = 46.5 m².
How many acres is a hectare?▾
1 hectare equals 2.471 acres. A hectare is 10,000 square meters (a 100 m × 100 m square). To convert hectares to acres, multiply by 2.471. To go from acres to hectares, multiply by 0.4047. A 10-acre property = 4.05 hectares.
How do I calculate a room's area in both square feet and square meters?▾
Measure length and width in feet, multiply to get square feet, then divide by 10.764 for square meters. Example: a 12 ft × 15 ft room = 180 sq ft = 16.7 m². Or measure in meters, multiply for m², then multiply by 10.764 for sq ft.