Feet to Kilometer Converter
Length · unit-converter
Convert Feet to Kilometer with a fixed input and output unit, step-by-step formula line, and reference tables. All calculations use SI-based definitions (international yard, nautical mile, etc.).
Calculator
From: Feet (ft)
To: Kilometer (km)
About Feet
Feet are imperial and US customary units of length; each is exactly 0.3048 meters. Twelve inches make one feet; feet are common in construction and human-scale dimensions.
About Kilometer
The kilometer is an SI unit equal to 1,000 meters. It is the standard unit for longer distances in most countries that use the metric system.
How to convert feet to kilometers
1 feet is equal to 0.0003048 kilometer:
1 ft = (0.3048 m ÷ 1000 m) km = 0.0003048 km
Each feet is defined as 0.3048 m and each kilometer as 1000 m, so one ft equals 0.3048 ÷ 1000 km = 0.0003048 km.
Let d(ft) be the numeric value of the same length measured in Feet (ft), and d(km) the value in Kilometer (km). Then:
d(km) = d(ft) × (0.3048 / 1000)
Equivalently, divide by how many ft fit into one km (meters per km divided by meters per ft):
d(km) = d(ft) ÷ 3280.83989501312317
Or: kilometer = feet ÷ 3280.83989501312317
Examples
Example #1: Convert 20 ft to kilometer
20 ft = 20 ft × (0.3048/1000) km = 0.006096 km
20 ft = 20 ft ÷ 3280.83989501312317 = 0.006096 km
Example #2: Convert 50 ft to kilometer
50 ft = 50 ft × (0.3048/1000) km = 0.01524 km
50 ft = 50 ft ÷ 3280.83989501312317 = 0.01524 km
Summary
To convert Feet to Kilometer, multiply the value in ft by the ratio of meters per ft divided by meters per km. Equivalently: value_km = value_ft × (0.3048 / 1000). Numerically, 1 ft equals 0.00030480000000000004 km.
Relationship context
You are converting between US customary / imperial (Feet) and metric (SI) (Kilometers). Metric units are decimal; imperial units use inches, feet, yards, and miles tied to the international yard definition. Nautical miles are defined in meters (1 nmi = 1,852 m). This tool uses SI-based factors so results stay consistent with modern standards.
Conversion tables
| Feet (ft) | Kilometer (km) |
|---|---|
| 0.1 | 0.00003048 |
| 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 |
| Feet (ft) | Kilometer (km) |
|---|---|
| 10 | 0.003048 |
| 20 | 0.006096 |
| 30 | 0.009144 |
| 40 | 0.012192 |
| 50 | 0.01524 |
| 60 | 0.018288 |
| 70 | 0.021336 |
| 80 | 0.024384 |
| 90 | 0.027432 |
| 100 | 0.03048 |
Conversions outside the hub list
The grid on the category page lists hub units only. These pairs include at least one unit outside that hub set (same tools: formulas and tables on each page).
- feet to nmiFeet to Nautical Mile
- feet to chainFeet to Chain
- feet to fathomFeet to Fathom
- feet to umFeet to Micrometer
- feet to nmFeet to Nanometer
- feet to angstromFeet to Angstrom
- feet to pmFeet to Picometer
- nmi to kmNautical Mile to Kilometer
- chain to kmChain to Kilometer
- fathom to kmFathom to Kilometer
- um to kmMicrometer to Kilometer
- nm to kmNanometer to Kilometer