= 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 miles-per-hour

miles-per-hour to miles-per-second

miles-per-hour to feet-per-minute

miles-per-hour to kilometers-per-minute

kilometers-per-hour to feet-per-hour

kilometers-per-hour to knots

kilometers-per-hour to miles-per-minute

kilometers-per-hour to yards-per-hour

miles-per-hour to feet-per-hour

miles-per-second to knots

feet-per-minute to miles-per-minute

kilometers-per-minute to yards-per-hour

yards-per-hour to miles-per-minute

meters-per-second to knots

meters-per-minute to feet-per-hour

knots to kilometers-per-minute

miles-per-hour to miles-per-second

miles-per-hour to feet-per-minute

miles-per-hour to kilometers-per-minute

kilometers-per-hour to feet-per-hour

kilometers-per-hour to knots

kilometers-per-hour to miles-per-minute

kilometers-per-hour to yards-per-hour

miles-per-hour to feet-per-hour

miles-per-second to knots

feet-per-minute to miles-per-minute

kilometers-per-minute to yards-per-hour

yards-per-hour to miles-per-minute

meters-per-second to knots

meters-per-minute to feet-per-hour

knots to kilometers-per-minute

27 miles-per-hour to kilometers-per-hour

90 miles-per-hour to kilometers-per-hour

250 miles-per-hour to kilometers-per-hour

7100 miles-per-hour to kilometers-per-hour

28000 miles-per-hour to kilometers-per-hour

2970 miles-per-hour to kilometers-per-hour

196000 miles-per-hour to kilometers-per-hour

11935 miles-per-hour to kilometers-per-hour

683 miles-per-hour to kilometers-per-hour

4912 miles-per-hour to kilometers-per-hour

8605 miles-per-hour to kilometers-per-hour

45429 miles-per-hour to kilometers-per-hour

85292 miles-per-hour to kilometers-per-hour

352877 miles-per-hour to kilometers-per-hour

778000000 miles-per-hour to kilometers-per-hour

733000000000 miles-per-hour to kilometers-per-hour

90 miles-per-hour to kilometers-per-hour

250 miles-per-hour to kilometers-per-hour

7100 miles-per-hour to kilometers-per-hour

28000 miles-per-hour to kilometers-per-hour

2970 miles-per-hour to kilometers-per-hour

196000 miles-per-hour to kilometers-per-hour

11935 miles-per-hour to kilometers-per-hour

683 miles-per-hour to kilometers-per-hour

4912 miles-per-hour to kilometers-per-hour

8605 miles-per-hour to kilometers-per-hour

45429 miles-per-hour to kilometers-per-hour

85292 miles-per-hour to kilometers-per-hour

352877 miles-per-hour to kilometers-per-hour

778000000 miles-per-hour to kilometers-per-hour

733000000000 miles-per-hour to kilometers-per-hour