Convert Feet to Kilometers
Feet to kilometers is for when a distance in feet is too long to think about in feet anymore — race distances, hikes, flight altitudes. One foot is exactly 0.000305 kilometers, so the numbers shrink fast.
Feet to Kilometers conversion table
| Feet (ft) | Kilometers (km) |
|---|---|
| 1 | 0.000305 |
| 2 | 0.00061 |
| 3 | 0.000914 |
| 5 | 0.001524 |
| 10 | 0.003048 |
| 20 | 0.006096 |
| 50 | 0.01524 |
| 100 | 0.03048 |
| 500 | 0.1524 |
| 1,000 | 0.3048 |
The formula
To convert feet to kilometers, multiply the length in feet by 0.000305:
kilometers = feet × 0.000305
A worked example
Convert 5,000 feet of elevation gain to kilometers:
5,000 × 0.000305 = 1.524 km
For smaller distances, 10 feet is just 0.003048 km — feet and kilometers are rarely the two units you'd pick together unless one end of the conversion is already fixed.
Why it's exact
The foot is defined as exactly 0.3048 meters, and a kilometer is exactly 1,000 meters, so the feet-to-kilometers factor is exact too — just a very small number.
When you'll use it
Converting elevation or altitude figures, trail distances, or any measurement that starts in feet but needs to fit into a kilometer-based context, like a race course or a metric map.
Frequently asked questions
How many kilometers are in a foot?
Exactly 0.000305 km. It's a tiny number because a foot is a small fraction of a kilometer.
How many kilometers is 100 feet?
100 × 0.000305 = 0.03048 km.
When would I convert feet to kilometers instead of meters?
When you're already thinking in kilometers, like a race distance or a driving distance, and you have a small piece of it — like elevation gain — given in feet.