One foot equals exactly 0.0003048 kilometers — the feet-to-kilometers conversion connects everyday imperial measurements with the metric scale used across most of the world. Feet are the standard unit for building heights, property frontage, and runway dimensions in countries like the United States, while kilometers dominate official maps and road networks. Whether you are translating a hiking trail’s length, a property boundary, or a flight’s approach distance into metric terms, the calculation is the same. Use the free calculator below for an instant result, or read on for the formula, a conversion chart, and answers to common questions.
Feet to Km Converter
Result will appear here
Feet to Km Conversion Formula
The conversion rests on the exact definition of the foot: 1 foot = 0.3048 meters, which makes 1 foot equal to exactly 0.0003048 kilometers. Multiplying any measurement in feet by this factor gives you kilometers, with no rounding needed in the definition itself. The 0.3048 figure was fixed internationally in 1959, so the factor is exact rather than approximate — it applies everywhere without local variation, and the precision of your answer is limited only by the precision of your starting measurement.
km = ft × 0.0003048
Example: 10 ft × 0.0003048 = 0.003048 km — so a 10-foot garden fence is just 0.003048 kilometers long.
To convert back: ft = km ÷ 0.0003048.
How to Convert Feet to Km
- Enter your value in feet in the converter above.
- The result in kilometers appears instantly as you type — no button needed.
- Press Swap to flip the direction and convert kilometers back to feet.
- Doing it by hand? Multiply the feet by 0.0003048.
Feet to Km Conversion Chart
For quick lookups without typing, find your foot value on the left and read the kilometer equivalent on the right. The table covers everyday round numbers from 1 to 100 feet — handy for builders checking material lengths, surveyors comparing property frontage, and travellers making sense of trail markers.
| Feet (ft) | Kilometers (km) |
|---|---|
| 1 | 0.0003048 |
| 2 | 0.0006096 |
| 3 | 0.0009144 |
| 4 | 0.0012192 |
| 5 | 0.001524 |
| 6 | 0.0018288 |
| 7 | 0.0021336 |
| 8 | 0.0024384 |
| 9 | 0.0027432 |
| 10 | 0.003048 |
| 25 | 0.00762 |
| 50 | 0.01524 |
| 100 | 0.03048 |
FAQs
What is the formula to convert feet to km?
Multiply the length in feet by 0.0003048. In short: km = ft × 0.0003048. The factor is exact, so a 100-foot measurement is exactly 0.03048 km, and you only need to round the result to the precision your project requires.
How many kilometers are in 1 foot?
Exactly 0.0003048 kilometers. This follows from the international definition of the foot as 0.3048 meters — shifting three decimal places gives the kilometer value. For small distances the result looks tiny, which is why feet suit everyday lengths and kilometers suit longer journeys.
How many feet are in 1 kilometer?
One kilometer equals 3,280.84 feet — divide kilometers by 0.0003048 to convert. So a 5 km hike covers about 16,404 feet, and a 10,000-foot runway is roughly 3.05 kilometers. Pressing Swap in the calculator above performs this reverse conversion automatically, with the labels updating to match.
Which is bigger, a foot or a kilometer?
A kilometer is far bigger: one kilometer contains 3,280.84 feet. A foot is a human-scale unit — about the length of an adult's shoe — while a kilometer is a walking-scale unit, roughly a 10–12 minute stroll. That gap explains why converting feet directly to kilometers produces such small numbers. Use feet for rooms, fences, and frontage; use kilometers for roads, trails, and distances between towns.
Where is the feet-to-km conversion used in real life?
It bridges US-style measurements with metric documentation: comparing building heights (the Burj Khalifa stands 2,717 ft, about 0.828 km), translating hiking trail lengths onto metric maps, converting runway lengths for international aviation charts, and listing property frontage for buyers who think in metric. Whenever feet meet the metric world, this conversion does the translation.