Square feet to Square kilometres Converter
Convert square feet (sq ft) to square kilometres (km²) instantly. Area conversions are everyday maths in Singapore property: HDB flats are listed in square metres while condo listings and PSF prices use square feet.
Result
- Square kilometres
- 9.290304e-8 km²
How to use the square feet to square kilometres converter
- Enter the square feet (sq ft).
- The results update as you type, or press Calculate.
- Read the square kilometres first, then the supporting figures below it.
Formula
Square kilometres = square feet × 9.290304e-08
Worked example
For example, with these inputs:
- Square feet (sq ft): 1
the calculator returns:
- Square kilometres: 9.290304e-8 km²
Square feet to Square kilometres table
| Square feet | Square kilometres |
|---|---|
| 1 sq ft | 9.290304e-8 km² |
| 2 sq ft | 1.858061e-7 km² |
| 5 sq ft | 4.645152e-7 km² |
| 10 sq ft | 9.290304e-7 km² |
| 20 sq ft | 1.858061e-6 km² |
| 25 sq ft | 2.322576e-6 km² |
| 50 sq ft | 4.645152e-6 km² |
| 100 sq ft | 9.290304e-6 km² |
| 250 sq ft | 2.322576e-5 km² |
| 500 sq ft | 4.645152e-5 km² |
| 1,000 sq ft | 9.290304e-5 km² |
About this conversion
Area conversions are everyday maths in Singapore property: HDB flats are listed in square metres while condo listings and PSF prices use square feet.
Many conversion factors are exact by definition. The inch has been defined as exactly 2.54 centimetres since 1959, and the pound as exactly 0.45359237 kilograms, so conversions involving them can be as precise as you need.
For everyday use, three or four significant figures are usually enough. Engineering, science and trade documents may need more, and rounding should happen only at the end of a calculation.
Frequently asked questions
How many square kilometres are in one square feet?
1 sq ft = 9.290304e-8 km².
How do I convert sq ft to km²?
Square kilometres = square feet × 9.290304e-08.