Convert Square Foot (ft²) to Square Km (km²) instantly. Enter any value — result updates live.
Converting Square Foot to Square Km is a common area conversion. One square foot (ft²) equals 9.290300e-8 square km (km²). Square feet are the standard unit for real estate and floor area in the United States.
This conversion is commonly needed for construction planning, farming and agriculture, interior design and flooring. Square kilometers measure large land areas like cities, countries, and geographic regions.
To put square foot in perspective: a small bedroom (about 100 ft²). In square km, common references include the United Kingdom (about 243,610 km²).
US real estate listings almost universally use square feet, a holdover from imperial measurement that persists even though most of the world moved to square meters decades ago.
Countries are often compared by land area in square kilometers — Russia, the largest country, spans about 17.1 million km², more than 40 times the size of France.
People frequently convert between square foot and square km for:
| Square Foot (ft²) | Square Km (km²) |
|---|---|
| 1 ft² | 9.290300e-8 km² |
| 2 ft² | 1.85806e-7 km² |
| 5 ft² | 4.64515e-7 km² |
| 10 ft² | 9.2903e-7 km² |
| 15 ft² | 0.000001393545 km² |
| 20 ft² | 0.00000185806 km² |
| 25 ft² | 0.000002322575 km² |
| 30 ft² | 0.00000278709 km² |
| 50 ft² | 0.00000464515 km² |
| 100 ft² | 0.0000092903 km² |
| 200 ft² | 0.0000185806 km² |
| 500 ft² | 0.0000464515 km² |
| 1000 ft² | 0.000092903 km² |