Use this useful tool to convert speed choosing one of the 17 units of measurment included in this app, that are:

Metric Units of Speed:
meters per second, kilometers per second, kilometers per hour, meters per minute

Imperial units:
miles per second, miles per hour, foot per second, foot per minute

Sport units:
minute per kilometer, second per kilometer, second per 100 meters, minute per mile, second per mile

Nautical speed units:
knot, seamile per hour

Other speed units:
speed of light, mach (speed of sound)