How do you convert miles per hour to kilometers per hour?

1 mile per hour = 1.609344 kilometers per hour. Multiply your miles per hour value by that factor, or use the speed converter above.

How do you convert kilometers per hour to miles per hour?

1 kilometer per hour = 0.621371192 miles per hour. Multiply your kilometers per hour value by that factor, or use the speed converter above.

1 meter per second = 3.6 kilometers per hour. Multiply your meters per second value by that factor, or use the speed converter above.

Convertly normalises every speed conversion through the meter per second, so results stay consistent whichever pair of units you pick.

Speed conversions between miles per hour, kilometers per hour, meters per second, knots and Mach.

Amount

Result1.609344

1 mile per hour = 1.609344 kilometers per hour

Unit	Symbol	System	In m/s
Meter per second	m/s	SI	1
Kilometer per hour	km/h	Metric	0.2777777778
Mile per hour	mph	US customary	0.44704
Foot per second	ft/s	US customary	0.3048
Knot	kn	Other	0.5144444444
Mach	Ma	Other	340.29

How do you convert miles per hour to kilometers per hour?: 1 mile per hour = 1.609344 kilometers per hour. Multiply your miles per hour value by that factor, or use the speed converter above.
How do you convert kilometers per hour to miles per hour?: 1 kilometer per hour = 0.621371192 miles per hour. Multiply your kilometers per hour value by that factor, or use the speed converter above.
How do you convert meters per second to kilometers per hour?: 1 meter per second = 3.6 kilometers per hour. Multiply your meters per second value by that factor, or use the speed converter above.
What is the base unit for speed?: Convertly normalises every speed conversion through the meter per second, so results stay consistent whichever pair of units you pick.