Convert Square Kilometres to Square Feet (km2 to ft2)
1 square kilometre (km²) = 10763910.42 square feet (ft²). 1 ft² = 9.290304 × 10⁻⁸ km². Example: 15 km² = 15 × 10763910.42 = 161458656.3 ft².
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1 km² = 10763910.42 ft²
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk square kilometre to square foot converter to paste a column from Excel.
How to Convert Square Kilometre to Square Foot
- 1 km² = 10763910.42 ft²
- 1 ft² = 9.290304 × 10⁻⁸ km²
- Example: convert 15 km² to ft²: 15 km² = 15 × 10763910.42 ft² = 161458656.3 ft²
Formula
ft² = km² × 10763910.41671
Derivation from SI units:
- 1 km² = (1000 m)² = 10⁶ m² = 100 ha
- 1 ft² = (0.3048 m)² = 0.09290304 m²
- 1 km² = 1000000 m² ÷ 0.09290304 m² per ft² = 10763910.41671 ft²
Both units are defined exactly, so the factor is exact. Square Kilometre definition: square kilometre; Square Foot definition: square foot.
Worked examples
- A reading of 2 km² converts to 21527820.83 ft².
2 km² × 10763910.42 = 21527820.83 ft² - A value of 50 km² is 538195520.8 ft².
50 km² × 10763910.42 = 538195520.8 ft²
Square Kilometre to Square Foot conversion table
| Square Kilometres (km²) | Square Feet (ft²) |
|---|---|
| 0.01 km² | 107639.1042 ft² |
| 0.1 km² | 1076391.042 ft² |
| 0.5 km² | 5381955.208 ft² |
| 1 km² | 10763910.42 ft² |
| 2 km² | 21527820.83 ft² |
| 5 km² | 53819552.08 ft² |
| 10 km² | 107639104.2 ft² |
| 25 km² | 269097760.4 ft² |
| 50 km² | 538195520.8 ft² |
| 100 km² | 1076391042 ft² |
| 1000 km² | 10763910420 ft² |
| 10000 km² | 107639104200 ft² |
Where it's used
Square Kilometres are used for city, lake and country areas, while square feet appear in US floor and building areas. Both measure area, so the conversion is a fixed factor.
Square Kilometre to other area units
| Conversion | 1 km² equals |
|---|---|
| square kilometre to square foot | 10763910.42 ft² |
| square kilometre to square meter | 1000000 m² |
| square kilometre to square centimeter | 10000000000 cm² |
| square kilometre to square inch | 1550003100 in² |
| square kilometre to hectare | 100 ha |
| square kilometre to acre | 247.1053815 ac |
| square kilometre to square millimeter | 1000000000000 mm² |
| square kilometre to square yard | 1195990.046 yd² |
Show 1 more units
| square kilometre to square mile | 0.3861021585 mi² |
|---|
Frequently asked questions
How many square feet are in 1 square kilometre?
1 km² = 10763910.42 ft².
How do I convert square kilometres to square feet?
Multiply the value in km² by 10763910.42. For example, 15 km² × 10763910.42 = 161458656.3 ft².
Is the km² to ft² conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 7, SI prefixes.
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "square foot (ft²)".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Square Kilometres to Square Feet (km2 to ft2). Retrieved October 25, 2026, from https://scientificconverters.com/area/square-kilometers-to-square-feet/
IEEE
Scientific Converters, "Convert Square Kilometres to Square Feet (km2 to ft2)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/area/square-kilometers-to-square-feet/