Kilometers to Feet
Type a value in either box to convert between kilometers and feet. The factor is 3280.84.
| Kilometers | Feet |
|---|---|
| 1 km | 3280.839895 ft |
| 2 km | 6561.67979 ft |
| 3 km | 9842.519685 ft |
| 5 km | 16404.199475 ft |
| 10 km | 32808.39895 ft |
| 25 km | 82020.997375 ft |
| 50 km | 164041.994751 ft |
| 100 km | 328083.989501 ft |
How to use
- Enter a value in the Kilometers field.
- The Feet figure appears immediately — no button to press.
- Typing in the Feet field converts back to Kilometers the same way.
- Use the reference table for the values that come up most often.
Kilometers to Feet formula
The factor from kilometers to feet is 3280.8399.
ft = km × 3280.8399
Why this factor: the kilometer and the foot are both defined against the meter, so dividing one definition by the other gives 3280.8399 directly. Both definitions are set out in full below.
To go the other way, divide by 3280.8399 — or use the Feet to Kilometers converter, which is the same calculation reversed.
Worked example
Given 5 km, multiplying by 3280.8399 yields 16404.199475 ft.
5 km × 3280.8399 = 16404.199475 ft
The converter above does this for any value you type, in either direction.
What is a kilometer?
A kilometer is 1,000 meters, the standard unit for road distances and geography in most of the world.
Definition: Exactly 1,000 meters by SI prefix definition — 'kilo' means 10³.
Where it is used: Road signs, running and cycling distances, and map scales outside the US and UK.
What is a foot?
A foot is twelve inches, the primary unit for human-scale dimensions in the US.
Definition: Exactly 0.3048 meter since 1959 — one third of the international yard.
Where it is used: Building heights, room dimensions, aviation altitude worldwide, and personal height in the US and UK.
Worth knowing: The US survey foot, very slightly longer, was used in land surveying until it was officially retired at the end of 2022.
Kilometers vs Feet
The kilometer is a metric unit while the foot is an imperial unit. That is why the factor between them is not a round number: the two systems were defined independently and only later tied together by exact agreement.
Frequently asked questions
How many feet are in a kilometer?
One kilometer equals 3280.8399 feet.
What is the formula to convert kilometers to feet?
Multiply the number of kilometers by 3280.8399. To reverse it, divide by 3280.8399 instead.
How do I convert feet back to kilometers?
Divide by 3280.8399, which is the same as multiplying by 0.0003048.
How many feet are in 10 kilometers?
10 km works out to 32808.39895 ft.
Is there anything to watch out for with feet?
The US survey foot, very slightly longer, was used in land surveying until it was officially retired at the end of 2022.
How is the kilometer defined?
Exactly 1,000 meters by SI prefix definition — 'kilo' means 10³.