Speed converter.Unit speed conversion.

SI system

kilometer per second - km/s

meter per second - m/s

kilometer per hour - km/h

meter per minute - m/min

The US and Britain

mile per second - mi/s

mile per hour - mph, mi/h

foot per second - ft/s

foot per minute - ft/min

For those who run

minute per kilometer - min/km

second per kilometer - s/km

second per 100 metres

minute per mile

second per mile

second per 100 yards

Marine units

knot - kn, kt

sea mile per hour


speed of sound in gas (mach)

speed of light in vacuum