Online calculator to convert square feet to square kilometers (ft2 to km2) with formulas, examples, and tables. Our conversions provide a quick and easy way to convert between Area units.
Conversion Calculator
Enter your value in the conversion calculator below.
Convert ft2 to km2
TIP: If the result of your conversion is 0, try increasing the "Decimals".
Conversion Definitions
The following is a list of definitions relating to conversions between square feet and square kilometers.
What is a square foot (ft2)?
A square foot is a unit of area in both US Customary Units as well as the Imperial System. The symbol for square foot is ft2 or sq ft. There are 10,763,910.41670972 square feet in a square kilometer. A square foot is calculated as the area of a square that has 1 foot on each side.
What is a square kilometer (km2)?
A square kilometer is a unit of area in the Metric System. The symbol for square kilometer is km2. There are 0.00000009290304 square kilometers in a square foot. A square kilometer is calculated as the area of a square that has 1 kilometer on each side. The International spelling for this unit is square kilometre.
Conversion Formula
Let's take a closer look at the conversion formula so that you can do these conversions yourself with a calculator or with an old-fashioned pencil and paper.
The formula to convert from ft2 to km2 is:
km2 = ft2 x 0.00000009290304
Conversion Example
Next, let's look at an example showing the work and calculations that are involved in converting from square feet to square kilometers (ft2 to km2).
Square Feet to Square Kilometer Conversion Example
Task: Convert 20,000,000 square feet to square kilometers (show work) Formula: ft2 x 0.00000009290304 = km2 Calculations: 20,000,000 ft2 x 0.00000009290304 = 1.8580608 km2 Result: 20,000,000 ft2 is equal to 1.8580608 km2
Conversion Table
For quick reference purposes, below is a conversion table that you can use to convert from ft2 to km2.
Square Feet to Square Kilometers Conversion Chart
| square feet (ft2) | square kilometers (km2) |
|---|---|
| 1 ft2 | 0.00000009 km2 |
| 2 ft2 | 0.00000019 km2 |
| 3 ft2 | 0.00000028 km2 |
| 4 ft2 | 0.00000037 km2 |
| 5 ft2 | 0.00000046 km2 |
| 6 ft2 | 0.00000056 km2 |
| 7 ft2 | 0.00000065 km2 |
| 8 ft2 | 0.00000074 km2 |
| 9 ft2 | 0.00000084 km2 |
| 10 ft2 | 0.00000093 km2 |
| 20 ft2 | 0.00000186 km2 |
| 30 ft2 | 0.00000279 km2 |
| 40 ft2 | 0.00000372 km2 |
| 50 ft2 | 0.00000465 km2 |
| 75 ft2 | 0.00000697 km2 |
| 100 ft2 | 0.00000929 km2 |
| 250 ft2 | 0.00002323 km2 |
| 500 ft2 | 0.00004645 km2 |
| 750 ft2 | 0.00006968 km2 |
| 1,000 ft2 | 0.0000929 km2 |
| 2,500 ft2 | 0.00023226 km2 |
| 5,000 ft2 | 0.00046452 km2 |
| 7,500 ft2 | 0.00069677 km2 |
| 10,000 ft2 | 0.00092903 km2 |
| 25,000 ft2 | 0.00232258 km2 |
| 50,000 ft2 | 0.00464515 km2 |
| 75,000 ft2 | 0.00696773 km2 |
| 100,000 ft2 | 0.0092903 km2 |
| 250,000 ft2 | 0.02322576 km2 |
Related Units
This table provides a summary of the Area units within their respective measurement systems.
| Unit | Symbol | Measurement System |
|---|---|---|
| square inches | in2 or sq in | US Customary Units/Imperial System |
| square feet | ft2 or sq ft | US Customary Units/Imperial System |
| square yards | yd2 or sq yd | US Customary Units/Imperial System |
| acres | ac | US Customary Units/Imperial System |
| square miles | mi2 or sq mi | US Customary Units/Imperial System |
| square millimeters | mm2 | Metric System |
| square centimeters | cm2 | Metric System |
| square decimeters | dm2 | Metric System |
| square meters | m2 | Metric System |
| square decameters | dam2 | Metric System |
| square hectometers | hm2 | Metric System |
| hectares | ha | Metric System |
| square kilometers | km2 | Metric System |
Note: For area conversions, US Customary Units and the Imperial System are equivalent.
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