Convert square kilometres to square feet
1 km² = 10763900 ft²
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All unit convertersQuestions
How many square feet are in a square kilometre?
One square kilometre is 10763910.4 square feet. To convert any amount, multiply by 10763910.4. Going the other way, one square foot is 9.290304e-8 square kilometres.
What is the formula to convert km² to ft²?
Multiply the square kilometre figure by 10763910.4. So ft² = km² × 10763910.4. For a quick mental estimate, multiplying by about 10763910 gets you within a percent or so, which is close enough for most everyday purposes.
What does a square kilometre actually look like?
One square kilometre is a medium city park. The square kilometre is the standard unit for reporting the area of cities, parks and countries in the metric world.
And what is a square foot?
One square foot is about the size of a floor tile. The square foot is exactly 0.09290304 square metres. It remains the property unit in the US, Canada, the UK and much of South Asia.
Is this conversion exact?
Yes. Since the 1959 international yard and pound agreement, the imperial and metric systems are related by exact definitions rather than measurements — the inch is exactly 25.4 mm and the pound exactly 0.45359237 kg. Everything derived from those, including this conversion, is therefore exact. Round at the end rather than partway through, since rounding km² before converting introduces an error the conversion then multiplies.
About km² to ft²
How to convert square kilometres to square feet
Multiply by 10763910.4. One square kilometre is 10763910.4 square feet, and one square foot is 9.290304e-8 square kilometres.
ft² = km² × 10763910.4
Worked example
100 km² = 1076391000 ft². For a sense of scale, one square kilometre is a medium city park, and one square foot is about the size of a floor tile.
About the square kilometre
The square kilometre is the standard unit for reporting the area of cities, parks and countries in the metric world.
About the square foot
The square foot is exactly 0.09290304 square metres. It remains the property unit in the US, Canada, the UK and much of South Asia.
Quick reference
| square kilometres | square feet |
|---|---|
| 1 km² | 10763900 ft² |
| 2 km² | 21527800 ft² |
| 5 km² | 53819600 ft² |
| 10 km² | 107639000 ft² |
| 25 km² | 269098000 ft² |
| 50 km² | 538196000 ft² |
| 100 km² | 1076390000 ft² |
| 1000 km² | 10763900000 ft² |
Getting it right
This conversion is exact by definition, so the only limit on accuracy is how many digits you keep. Round at the end rather than partway through — rounding km² to a whole number before converting introduces an error that the conversion then multiplies.
Other area conversions
Convert square feet back to square kilometres, or pick any other pair with the full unit converter. Related: km² to m², km² to acre, km² to ha.