Convert Square Feet to Square Kilometers
Convert Square Feet (ft²) to Square Kilometers (km²) instantly and accurately.
Conversion Formula
km² = ft² × 9.290304000e-8
About Square Feet
A square foot (ft²) is an imperial unit of area equal to a square with sides of one foot (12 in × 12 in or 144 in²). It is the standard for measuring floor space in the United States and some other countries. A typical bedroom is 100-150 ft², and the average American house is roughly 2,000-2,500 ft². This unit dominates real estate listings, flooring sales, and construction in countries using imperial measurements.
About Square Kilometers
A square kilometer (km²) is a metric unit of area equal to a square with sides of one kilometer (1,000 m × 1,000 m). It is used for measuring large land areas such as cities, forests, lakes, and countries. Manhattan (New York) is about 59 km², and Monaco (the second smallest country) is just over 2 km². This unit is essential in geography, urban planning, forestry, and environmental impact studies.
Quick Reference Table
| Square Feet (ft²) | Square Kilometers (km²) |
|---|---|
| 1 ft² | 9.29 × 10-8 km² |
| 2 ft² | 1.858 × 10-7 km² |
| 5 ft² | 4.645 × 10-7 km² |
| 10 ft² | 9.29 × 10-7 km² |
| 25 ft² | 2.323 × 10-6 km² |
| 50 ft² | 4.645 × 10-6 km² |
| 100 ft² | 9.29 × 10-6 km² |