Convert Square Foot to Square Kilometer
Use this free converter to change square feet (ft²) into square kilometers (km²). Square foot and square kilometer both measure area. As a quick reference, 1 ft² equals 9.2903e-8 km², and 1 km² equals 10763910 ft².
Free · runs in your browser · no sign-up
Square Kilometer (km²)
9.2903e-8
1 ft² = 9.2903e-8 km²
Area conversion table
| Square Foot | Square Kilometer |
|---|---|
| 0.01 | 9.2903e-10 |
| 0.1 | 9.2903e-9 |
| 0.5 | 4.6452e-8 |
| 1 | 9.2903e-8 |
| 2 | 1.8581e-7 |
| 3 | 2.7871e-7 |
| 5 | 4.6452e-7 |
| 10 | 9.2903e-7 |
| 20 | 0.0000018580608 |
| 25 | 0.000002322576 |
| 50 | 0.000004645152 |
| 100 | 0.000009290304 |
| 1,000 | 0.00009290304 |
How to convert Square Foot to Square Kilometer
Multiply the square foot value by 9.2903e-8 to get square kilometers.
- Enter the number of square feet you want to convert.
- The converter instantly shows the equivalent value in square kilometers.
- Worked example: 15 ft² × 9.2903e-8 = 0.0000013935456 km².
- Use the swap button to reverse the conversion (square kilometer to square foot).
About these units
Square Foot (ft²)
- Definition
- A square foot (ft²) is the area of a square one foot on each side, about 0.093 square meters.
- History
- It derives from the foot and is deeply embedded in US and UK property practice.
- Current use
- Square feet are the standard unit for real-estate floor area in the US and UK.
Square Kilometer (km²)
- Definition
- A square kilometer (km²) is the area of a square one kilometer on each side, equal to 1,000,000 square meters.
- History
- It is a metric multiple of the square meter for large areas.
- Current use
- Square kilometers measure the area of cities, regions, lakes, and countries.
Frequently asked questions
How many square kilometers are in a square foot?
There are 9.2903e-8 km² in 1 ft². To convert, multiply the number of square feet by 9.2903e-8.
How do I convert square feet to square kilometers?
Multiply the square foot value by 9.2903e-8 to get square kilometers. For example, 10 ft² = 9.2903e-7 km².
Is this square foot-to-square kilometer converter free?
Yes. This converter is completely free, runs entirely in your browser, and requires no sign-up. Your inputs never leave your device.
Convert Square Foot to other area units
| Unit | 1 Square Foot equals |
|---|---|
| Square Meter (m²) | 0.09290304 m² |
| Square Kilometer (km²) | 9.2903e-8 km² |
| Square Centimeter (cm²) | 929.0304 cm² |
| Square Mile (mi²) | 3.5870e-8 mi² |
| Square Yard (yd²) | 0.11111111 yd² |
| Square Inch (in²) | 144 in² |
| Acre (ac) | 0.000022956841 ac |
| Hectare (ha) | 0.000009290304 ha |