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Convert Foot/second to Kilometer/hour

Please provide values below to convert foot/second [ft/s] to kilometer/hour [km/h], or vice versa.

From: foot/second
To: kilometer/hour

Feet per second

Definition: A foot per second (symbol: ft/s) is a unit of speed and velocity that expresses the time taken in seconds to travel a specific distance in feet. It is equal to 0.3048 meters per second, the International System of Units (SI) derived unit of speed and velocity. It is also equal to 0.592484 knots and 0.681818 miles per hour.

History/origin: The foot per second is a measurement based in systems like the imperial and United States customary systems of units, where the foot is the preferred unit of length.

Current use: The foot per second is not widely used. The meter per second is the preferred measurement in scientific contexts, and either miles per hour or kilometers per hour are more common in everyday use for describing road speeds. The foot per second is also a relatively small unit of measurement making it difficult for use on a larger scale.


Definition: The unit kilometers per hour (symbol: km/h) is a unit of speed expressing the number of kilometers traveled in one hour.

History/origin: The unit of kilometers per hour is based on the meter, which was formally defined in 1799. According to the Oxford English Dictionary, the term kilometer first came into use in 1810. It was not until later in the mid-late 19th century however, that the use of kilometers per hour became more widespread; the myriametre (10,000 meters) per hour was preferred for expressing speed.

Current use: Km/h is currently the most commonly used unit of speed around the world and is typically used for car speeds and road signs. It is also common for both miles per hour as well as kilometers per hour to be displayed on car speedometers. There are many abbreviations for the unit kilometers per hour (kph, kmph, k.p.h, KMph., etc.), but "km/h" is the SI unit symbol.

Foot/second to Kilometer/hour Conversion Table

Foot/second [ft/s]Kilometer/hour [km/h]
0.01 ft/s0.0109728 km/h
0.1 ft/s0.109728 km/h
1 ft/s1.09728 km/h
2 ft/s2.19456 km/h
3 ft/s3.29184 km/h
5 ft/s5.4864 km/h
10 ft/s10.9728 km/h
20 ft/s21.9456 km/h
50 ft/s54.864 km/h
100 ft/s109.728 km/h
1000 ft/s1097.28 km/h

How to Convert Foot/second to Kilometer/hour

1 ft/s = 1.09728 km/h
1 km/h = 0.9113444153 ft/s

Example: convert 15 ft/s to km/h:
15 ft/s = 15 × 1.09728 km/h = 16.4592 km/h

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