Feet to Kilometers Converter

Convert feet to kilometers instantly.

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Common length units

Foot (ft)

Definition: A foot (symbol: ft or ') is a unit of length equal to exactly 0.3048 meters, or 12 inches. It is part of the imperial and US customary systems of measurement.

History/origin: As the name suggests, the foot was historically based on the length of a human foot. Various cultures used their own versions of the foot as a practical unit of measure. The international foot was standardized at exactly 0.3048 m in 1959.

Current use: The foot is primarily used in the United States for altitude in aviation, human height, and real estate. It also remains in common use in the United Kingdom alongside metric units.

Kilometer (km)

Definition: The kilometer is a metric distance unit for longer lengths. One km contains exactly 1,000 m, using the kilo- prefix for one thousand.

History/origin: Once the metric system was used for roads, maps, and travel, kilometers provided a manageable way to express distances that would be unwieldy in meters.

Current use: Km is standard on road signs, running routes, cycling apps, maps, navigation systems, rail distances, geography lessons, and trip planning across metric regions.