Square foot to Square kilometer Converter
1 ft² = 0 km² — convert instantly with formula and table.
Use the converter above for an immediate result — it recalculates on every keystroke and works offline once the page has loaded.
Quick answer: one square foot equals 0.00000009 square kilometers. So to convert square feet to square kilometers, multiply by 0.00000009.
How to convert square feet to square kilometers
square kilometers = square feet × 0.0000000929
The square foot rules North American real estate: homes, offices and rentals are all priced and compared per square foot.
The square kilometer (a million square meters) measures cities, lakes and countries — about 0.386 square miles.
Square foot to Square kilometer conversion table
| Square foot (ft²) | Square kilometer (km²) |
|---|---|
| 0.01 ft² | 0 km² |
| 0.1 ft² | 0.00000001 km² |
| 0.25 ft² | 0.00000002 km² |
| 0.4 ft² | 0.00000004 km² |
| 0.75 ft² | 0.00000007 km² |
| 1.25 ft² | 0.00000012 km² |
| 1.75 ft² | 0.00000016 km² |
| 2.5 ft² | 0.00000023 km² |
| 3.5 ft² | 0.00000033 km² |
| 4.5 ft² | 0.00000042 km² |
| 6 ft² | 0.00000056 km² |
| 8 ft² | 0.00000074 km² |
| 10 ft² | 0.00000093 km² |
| 12 ft² | 0.00000111 km² |
| 14 ft² | 0.0000013 km² |
| 16 ft² | 0.00000149 km² |
| 18 ft² | 0.00000167 km² |
| 20 ft² | 0.00000186 km² |
| 24 ft² | 0.00000223 km² |
| 26 ft² | 0.00000242 km² |
| 30 ft² | 0.00000279 km² |
| 35 ft² | 0.00000325 km² |
| 45 ft² | 0.00000418 km² |
| 55 ft² | 0.00000511 km² |
| 65 ft² | 0.00000604 km² |
| 75 ft² | 0.00000697 km² |
| 85 ft² | 0.0000079 km² |
| 95 ft² | 0.00000883 km² |
| 110 ft² | 0.00001022 km² |
| 125 ft² | 0.00001161 km² |
| 175 ft² | 0.00001626 km² |
| 250 ft² | 0.00002323 km² |
| 350 ft² | 0.00003252 km² |
| 450 ft² | 0.00004181 km² |
| 600 ft² | 0.00005574 km² |
| 750 ft² | 0.00006968 km² |
| 900 ft² | 0.00008361 km² |
| 1,500 ft² | 0.00013935 km² |
| 2,500 ft² | 0.00023226 km² |
| 10,000 ft² | 0.00092903 km² |
Need the opposite direction? Use the Square kilometer to Square foot converter, or read our complete guide to area conversions for every formula in one place.
Frequently asked questions
How many square kilometers are in one square foot?
One square foot equals 0.00000009 square kilometers. Multiply any square foot value by 0.00000009 to get square kilometers.
What is 10 square feet in square kilometers?
10 square feet equal 0.00000093 square kilometers (10 × 0).
Is the square foot to square kilometer conversion exact?
The conversion factor used here (0.0000000929) is based on the internationally agreed definitions of both units, so results are exact up to rounding of the final decimal places.
Is my data stored when I use this converter?
No. The conversion runs entirely in your browser with JavaScript — nothing you type is sent to a server, logged or stored.