= 1.60934271253 kilometers-per-hour

In everyday use and in kinematics, the speed of an object is the magnitude of its velocity (the rate of change of its position); it is thus a scalar quantity. The average speed of an object in an interval of time is the distance travelled by the object divided by the duration of the interval; the instantaneous speed is the limit of the average speed as the duration of the time interval approaches zero.

Speed has the dimensions of distance divided by time. The SI unit of speed is the meter per second, but the most common unit of speed in everyday usage is the kilometer per hour or, in the US and the UK, miles per hour. For air and marine travel the knot is commonly used.

The fastest possible speed at which energy or information can travel, according to special relativity, is the speed of light in a vacuum c = 299792458 metres per second (approximately 1079000000 km/h or 671000000 mph).

miles-per-hour to kilometers-per-hour

miles-per-hour to feet-per-hour

miles-per-hour to miles-per-hour

miles-per-hour to meters-per-minute

kilometers-per-hour to yards-per-hour

kilometers-per-hour to feet-per-minute

kilometers-per-hour to kilometers-per-minute

kilometers-per-hour to meters-per-second

kilometers-per-hour to yards-per-hour

feet-per-hour to feet-per-minute

miles-per-hour to kilometers-per-minute

meters-per-minute to meters-per-second

meters-per-second to kilometers-per-minute

meters-per-hour to feet-per-minute

kilometers-per-second to yards-per-hour

feet-per-minute to meters-per-minute

miles-per-hour to feet-per-hour

miles-per-hour to miles-per-hour

miles-per-hour to meters-per-minute

kilometers-per-hour to yards-per-hour

kilometers-per-hour to feet-per-minute

kilometers-per-hour to kilometers-per-minute

kilometers-per-hour to meters-per-second

kilometers-per-hour to yards-per-hour

feet-per-hour to feet-per-minute

miles-per-hour to kilometers-per-minute

meters-per-minute to meters-per-second

meters-per-second to kilometers-per-minute

meters-per-hour to feet-per-minute

kilometers-per-second to yards-per-hour

feet-per-minute to meters-per-minute

84 miles-per-hour to kilometers-per-hour

48 miles-per-hour to kilometers-per-hour

840 miles-per-hour to kilometers-per-hour

4400 miles-per-hour to kilometers-per-hour

77000 miles-per-hour to kilometers-per-hour

2840 miles-per-hour to kilometers-per-hour

408000 miles-per-hour to kilometers-per-hour

27170 miles-per-hour to kilometers-per-hour

510 miles-per-hour to kilometers-per-hour

2496 miles-per-hour to kilometers-per-hour

9187 miles-per-hour to kilometers-per-hour

17011 miles-per-hour to kilometers-per-hour

94386 miles-per-hour to kilometers-per-hour

235732 miles-per-hour to kilometers-per-hour

4331000000 miles-per-hour to kilometers-per-hour

1559000000000 miles-per-hour to kilometers-per-hour

48 miles-per-hour to kilometers-per-hour

840 miles-per-hour to kilometers-per-hour

4400 miles-per-hour to kilometers-per-hour

77000 miles-per-hour to kilometers-per-hour

2840 miles-per-hour to kilometers-per-hour

408000 miles-per-hour to kilometers-per-hour

27170 miles-per-hour to kilometers-per-hour

510 miles-per-hour to kilometers-per-hour

2496 miles-per-hour to kilometers-per-hour

9187 miles-per-hour to kilometers-per-hour

17011 miles-per-hour to kilometers-per-hour

94386 miles-per-hour to kilometers-per-hour

235732 miles-per-hour to kilometers-per-hour

4331000000 miles-per-hour to kilometers-per-hour

1559000000000 miles-per-hour to kilometers-per-hour