How to convert kilometers to feet
To convert a measurement in kilometers to feet, multiply the value by 3,280.8399. The conversion factor comes from the relationship between both units and the meter (the SI base unit of length).
For example, to convert 5 km to feet: 5 × 3,280.8399 = 16,404.1995 ft.
What is a kilometer?
A kilometer is a metric unit of length equal to 1,000 meters or approximately 0.621 miles. The kilometer was introduced with the metric system in France in 1795, derived from the Greek 'khilioi' (thousand) and 'metron' (measure). It became the standard unit for measuring road distances in most countries.
Common uses of kilometers include: Road distances and speed limits in most countries; Running events (5K, 10K, marathon distances); Geographic distances between cities; Aviation altitude reporting in some regions.
What is a foot?
A foot is an imperial unit of length equal to 12 inches or exactly 0.3048 meters. One of the oldest units of measurement, based on the human foot. Used in ancient civilizations from Egypt to Rome. The international foot was defined as exactly 0.3048 meters in 1959.
Common uses of feet include: Human height in the US and UK (e.g. 5'10"); Room dimensions and ceiling height; Aviation altitude measurement worldwide; Construction and building codes in imperial countries.
When you need to convert kilometers to feet
Converting kilometers to feet is common when working with international specifications, importing products from metric countries, or comparing measurements across systems. Many technical fields require fluency in both measurement systems.
Kilometers to feet worked examples
Here are some common values converted:
1 km = 3,280.8399 ft 5 km = 16,404.1995 ft 10 km = 32,808.399 ft 50 km = 164,041.9948 ft 100 km = 328,083.9895 ft
Frequently asked questions
How many feet are in one kilometer?
One kilometer (km) equals 3,280.8399 feet (ft). Multiply any value in kilometers by 3,280.8399 to convert to feet.
How do I convert kilometers to feet?
Multiply the value in kilometers by 3,280.8399. For example, 5 km × 3,280.8399 = 16,404.1995 ft.
How do I convert feet to kilometers?
Multiply the value in feet by 0.0003048, or divide by 3,280.8399. Use the swap button on the converter above to reverse the direction.
Is the kilometer to foot conversion exact?
Yes, the conversion is exact. Since 1959, one inch is defined as exactly 25.4 mm (the international yard and pound agreement), so all metric-imperial length conversions use exact factors.
What is the formula for kilometers to feet?
The formula is: ft = km × 3,280.8399. This is derived from the definition of both units relative to the meter (the SI base unit of length).