Convert square feet to square kilometers

1 ft² = 9.2903 × 10^-8 km². Change the amount below, or read the formula and the reference table further down.

1 square foot equals

9.2903 × 10^-8square kilometers

1 ft² = 9.2903 × 10^-8 km²

The formula

Square feet and square kilometers both measure area from the same zero, so a single multiplier does the job.

km² = ft² × 9.2903 × 10^-8

Going the other way? Convert square kilometers to square feet.

Square feet to square kilometers table

Common values, rounded for reading.

Square feet (ft²)Square kilometers (km²)
19.2903 × 10^-8
21.8581 × 10^-7
32.7871 × 10^-7
43.7161 × 10^-7
54.6452 × 10^-7
65.5742 × 10^-7
76.5032 × 10^-7
87.4322 × 10^-7
98.3613 × 10^-7
109.2903 × 10^-7
150.000001
200.000002
250.000002
300.000003
400.000004
500.000005
750.000007
1000.000009
2500.000023
5000.000046
1,0000.000093

Questions people ask

How many square kilometers are in a square foot?
One square foot equals 9.2903 × 10^-8 square kilometers.
How do I convert square feet to square kilometers by hand?
Multiply the number of square feet by 9.2903 × 10^-8. For a rough check, 9.2903 × 10^-8 is close enough for most everyday use.
What is 1 square foot in square kilometers?
1 square foot is 9.2903 × 10^-8 square kilometers.

Calcuit generates this page from a unit table, so the factors here match every other page on the site.

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