Kilometer is 1000 meter units.
Kilometers to US survey feet Converter — km to ftUS
Convert Kilometer (km) to US survey foot (ftUS) using the exact conversion factor (1 kilometer = 3,280.833333 us survey foot). See the formula, worked examples, conversion table, history, and common uses.
Kilometers to US survey feet converter
Converter
Length Converter
Convert SI, imperial, US customary, astronomical, scientific, and historical length units.
Context values
Some unit families need one extra value for a physically accurate result.
The US survey foot is 1200/3937 meters and is retained for legacy land records.
Result = input x 1000 / 0.3048006096.
Length uses the meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Kilometers to US survey feet
Kilometer and US survey foot both measure length. Kilometer is most often used for road signage, speed limits, and vehicle odometers outside the us.
Formula
us survey feet = kilometers × 3280.83333333
This factor comes from each unit's defined relationship to the category's base unit: 1 kilometer equals 1000 base units, and 1 us survey foot equals 0.304800609601 base units, so dividing one by the other gives the direct kilometer-to-us survey foot factor of 3280.83333333.
Simple example
1 km × 3280.833333 = 3,280.833333 ftUS
1 kilometer = 3,280.833333 us survey feet.
Real-world example
10 km × 3280.833333 = 32,808.33333 ftUS
10 kilometers = 32,808.33333 us survey feet.
Conversion table
| Kilometer (km) | US survey foot (ftUS) |
|---|---|
| 1 km | 3,280.833333 ftUS |
| 5 km | 16,404.16667 ftUS |
| 10 km | 32,808.33333 ftUS |
| 21.0975 km | 69,217.38125 ftUS |
| 42.195 km | 138,434.7625 ftUS |
| 100 km | 328,083.3333 ftUS |
Reverse conversion: US survey foot to Kilometer
1 ftUS × 0.0003048006096 = 0.0003048006 km
1 us survey foot = 0.0003048006 kilometers.
kilometers = us survey feet × 0.000304800609601
For a page dedicated to this direction, see US survey foot to Kilometer.
Understanding the Kilometer
Kilometer (km) measures distance. A kilometer is 1,000 meters — the meter is the SI base unit of length. It is classified as a SI derived (metric prefix) unit.
Where it's used: Standard road, distance, and mapping unit in nearly every country except the United States
Uses of the Kilometer today
- Road signage, speed limits, and vehicle odometers outside the US
- Geographic and mapping distances
- Endurance sports (marathons are measured in kilometers internationally, though the marathon distance itself is a fixed value in both systems)
History of the Kilometer
The meter was defined during the French Revolutionary metric reforms as one ten-millionth of the distance from the North Pole to the Equator along a meridian through Paris. 'Kilo-' is simply the SI prefix for 1,000, making the kilometer a direct decimal multiple.
The meter itself has been redefined several times as measurement precision improved — from a physical platinum-iridium bar (1889) to a krypton-86 wavelength (1960) to its current definition (1983) as the distance light travels in a fixed fraction of a second.
Historical origin. Kilometer was not the invention of a single named person; it developed through the process described above.
Understanding the US survey foot (ftUS)
The US survey foot is 1200/3937 meters and is retained for legacy land records.
Kilometer — sources
- BIPM — The metre (SI base unit) — Current definition and history of the meter.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many us survey feet are in 1 kilometer?
1 kilometer equals 3,280.833333 us survey feet, using the exact defined conversion factor rather than an estimate.
How do I convert kilometer to us survey foot?
Multiply the kilometer value by 3280.833333. The converter above does this instantly to whatever precision you set.
How do I convert us survey foot back to kilometer?
Use the reverse factor: 1 us survey foot equals 0.0003048006 kilometers. You can also use the swap control in the converter above to flip the direction instantly.
What is a kilometer?
Kilometer (km) measures distance. A kilometer is 1,000 meters — the meter is the SI base unit of length. It is classified as a SI derived (metric prefix) unit.
What is a us survey foot?
US survey foot (ftUS) is a unit of length.
Is the kilometer to us survey foot conversion exact?
Yes. Both kilometer and us survey foot are defined by fixed standards rather than physical artifacts, so the factor of 3280.833333 used above is exact to as many digits as you choose to display.
Where is the kilometer still used today?
Standard road, distance, and mapping unit in nearly every country except the United States