Convert Foot (ft) to Kilometer (km) instantly. Enter any value and get the result immediately.
ft → km Converter
| Foot (ft) | Kilometer (km) |
|---|---|
| 0.1 ft | 0.00003048 km |
| 0.5 ft | 0.0001524 km |
| 1 ft | 0.0003048 km |
| 2 ft | 0.0006096 km |
| 5 ft | 0.001524 km |
| 10 ft | 0.003048 km |
| 20 ft | 0.006096 km |
| 50 ft | 0.01524 km |
| 100 ft | 0.03048 km |
| 200 ft | 0.06096 km |
| 500 ft | 0.1524 km |
| 1000 ft | 0.3048 km |
| 5000 ft | 1.524 km |
| 10000 ft | 3.048 km |
Converting feet to kilometers is a common need when working between the imperial and metric systems, especially in aviation, trekking, and international navigation. To convert, multiply the foot value by 0.0003048. Use the converter above for instant results, or follow the formula and examples below.
Step-by-step example — Convert 5,000 ft to km:
Step-by-step example — Convert 29,032 ft (height of Mount Everest) to km:
Foot (ft) is an imperial and US customary unit of length equal to exactly 12 inches or 30.48 centimeters (0.3048 m). Historically derived from the length of a human foot, it is today defined precisely by international agreement. The foot is the standard unit for measuring altitude in aviation worldwide, human height and building dimensions in the US, terrain elevation in surveying, and depth in underwater exploration. One foot is approximately the length of a standard 30 cm school ruler.
Kilometer (km) is a metric unit of length equal to exactly 1,000 meters or approximately 3,280.84 feet. The prefix "kilo-" means one thousand in the SI system. It is the global standard for expressing road distances, travel routes, race course lengths, geographic extents, and mountain heights in most countries worldwide. While aviation continues to use feet for altitude, ground-level distances and elevations in scientific and international contexts are almost universally expressed in kilometers.
| Feet (ft) | Kilometers (km) | Common Reference |
|---|---|---|
| 100 ft | 0.03048 km | Height of a 10-story building |
| 328 ft | 0.1 km | 100 meters exactly |
| 500 ft | 0.1524 km | Typical low cloud ceiling height |
| 1,000 ft | 0.3048 km | Height of the Eiffel Tower (approx.) |
| 3,281 ft | 1 km | 1 kilometer exactly |
| 5,000 ft | 1.524 km | Typical parachute jump altitude |
| 10,000 ft | 3.048 km | Common light aircraft cruising altitude |
| 29,032 ft | 8.849 km | Summit of Mount Everest |
| 35,000 ft | 10.668 km | Typical commercial aircraft cruise altitude |
There are exactly 3,280.84 feet in one kilometer. So 1 km = 3,280.84 ft.
The formula is: km = ft × 0.0003048. Multiply any foot value by 0.0003048 to get the equivalent distance in kilometers.
1 ft = 0.0003048 km. A single foot is a small fraction of a kilometer — it takes 3,280.84 feet to make one full kilometer.
10,000 ft = 3.048 km. This is a useful aviation reference — 10,000 feet is the standard altitude at which many aircraft transition from low-altitude to en-route flight procedures.
A foot is much smaller. One kilometer equals 3,280.84 feet — making a kilometer over three thousand times larger than a single foot.
35,000 ft = 10.668 km. This is the typical cruising altitude of a commercial passenger aircraft — roughly 10.7 kilometers above sea level, well above the weather in the stratosphere.
International aviation adopted feet as the standard unit for altitude through the conventions established by the International Civil Aviation Organization (ICAO), largely driven by early US and UK dominance in aviation development. While most of the world uses the metric system on the ground, feet remain the global aviation standard for altitude to ensure consistent communication between pilots and air traffic controllers across all countries — avoiding dangerous confusion from mixed unit systems mid-flight.