Formula
ft² to km² conversion formula
Use this relationship for a direct conversion:
km² = ft² x 0.000000092903
Worked example
2 ft² = 0.0000001858 km².
Values derived from exact metric and international length definitions.
Area conversion
Convert Square foot to Square kilometer
1 square foot (ft²) equals 0.000000092903 square kilometer (km²). Enter any value below to convert from ft² to km².
Enter a value and choose units. Results update instantly.
1 ft² = 0.0000000929 km²
All Area units
From 1 ft²| Unit | Value |
|---|---|
| Square meter m² | 0.09290304 |
| Square kilometer km² | 0.0000000929 |
| Square centimeter cm² | 929.0304 |
| Square millimeter mm² | 92,903.04 |
| Square inch in² | 144 |
| Square foot ft² | 1 |
| Square yard yd² | 0.1111111111 |
| Square mile mi² | 0.0000000359 |
| Acre ac | 0.0000229568 |
| Hectare ha | 0.0000092903 |
Recent conversions
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Quick reference
Square foot to Square kilometer table
| Square foot (ft²) | Square kilometer (km²) |
|---|---|
| 0.01 | 0.0000000009 |
| 0.1 | 0.0000000093 |
| 1 | 0.0000000929 |
| 2 | 0.0000001858 |
| 5 | 0.0000004645 |
| 10 | 0.000000929 |
| 25 | 0.0000023226 |
| 50 | 0.0000046452 |
| 100 | 0.0000092903 |
| 1,000 | 0.000092903 |
From unit
About the square foot
The area of a square one foot on each side.
Symbol: ft²
To unit
About the square kilometer
One million square meters.
Symbol: km²
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Related conversions
Source
Conversion standard
Definitions are checked against NIST SP 811: Area units. Calculations use full internal precision before display rounding.
View the complete area converterQuestions
ft² to km² FAQ
How do you convert square foot to square kilometer?
Use the formula km² = ft² x 0.000000092903. 1 square foot (ft²) equals 0.000000092903 square kilometer (km²).
Is the ft² to km² conversion exact?
Both unit definitions use exact factors. Only the displayed decimal may be rounded.