Speed Unit Converter

Convert between 7 speed units instantly - km/h, mph, m/s, knots and more

Value

From

Result

Convert to All Units

Kilometer/hour (km/h)-

Mile/hour (mph)-

Meter/second (m/s)-

Foot/second (ft/s)-

Knot (kn)-

Mach (Ma)-

Speed of Light (c)-

Unit	Symbol	In m/s	Common Use
Kilometer/hour	km/h	0.2778	Car speedometers (most countries), weather reports
Mile/hour	mph	0.4470	Car speedometers (US, UK), baseball pitch speed
Meter/second	m/s	1	Scientific measurements, physics calculations
Foot/second	ft/s	0.3048	Bullet velocity, engineering (US)
Knot	kn	0.5144	Maritime & aviation speed, wind speed
Mach	Ma	343	Aircraft speed, supersonic jets
Speed of Light	c	299,792,458	Astronomy, relativistic physics

KM/H MPH MPH KM/H M/S KM/H KM/H M/S Knots KM/H KM/H Knots Knots MPH MPH Knots M/S MPH MPH M/S FT/S M/S M/S FT/S KM/H FT/S FT/S KM/H Mach KM/H KM/H Mach