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Speed Units Conversion
Speed (symbol: v) is the rate of motion, or equivalently the rate of change of position, expressed as distance d moved per unit of time t. Speed is a scalar quantity with dimensions distance/time; the equivalent vector quantity to speed is known as velocity. Speed is measured in the same physical units of measurement as velocity, but does not contain the element of direction that velocity has. Speed is thus the magnitude component of velocity.
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Kilometres per hour (American English: kilometers per hour) is a unit of both speed (scalar) and velocity (vector). The unit symbol is km/h or km·h-1. The incorrect abbreviations "kph" and "kmph" are sometimes also seen in English-speaking countries, in analogy to mph. In North American slang and military usage, km/h (as well as km) is commonly pronounced, and sometimes even written, as klicks or kays (K's).
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Kilometres per hour (American English: kilometers per hour) is a unit of both speed (scalar) and velocity (vector). The unit symbol is km/h or km·h-1. The incorrect abbreviations "kph" and "kmph" are sometimes also seen in English-speaking countries, in analogy to mph. In North American slang and military usage, km/h (as well as km) is commonly pronounced, and sometimes even written, as klicks or kays (K's).
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Convert from kilometer per hour
kilometer per hour (km/h)
kilometer per second (km/s)
centimeter per second (cm/s)
meter per second (m/s)
millimeter per second (mm/s)
foot per minute (ft/min)
mile per hour (mph)
mile per second (mps)
foot per second (ft/s)
inch per second (in/s)
knot (kn)
mach
minute per kilometer
second per kilometer
second per 100 metres
minute per mile
second per mile
second per 100 yards
speed of light (vacuum)
speed of sound (air)
Value
...calculating...
Format result
0 decimals
1 decimals
2 decimals
3 decimals
4 decimals
5 decimals
6 decimals
7 decimals
1 kilometer per hour is equal to:
Metric
kilometer per hour
1
kilometer per second
0.0003
centimeter per second
27.7778
meter per second
0.2778
millimeter per second
277.7778
British and U.S.
foot per minute
54.6807
mile per hour
0.6214
mile per second
0.0002
foot per second
0.9113
inch per second
10.9361
Nautical
knot
0.54
mach
0.0008
For runners and joggers
minute per kilometer
60
second per kilometer
3600
second per 100 metres
360
minute per mile
96.5606
second per mile
5793.6384
second per 100 yards
329.184
Other
speed of light (vacuum)
9.2657 x 10
^{-10}
speed of sound (air)
0.0008
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