What is a miles per hour?

Definition

mph

Miles per hour (mph) is the speed unit used in the United States and United Kingdom.

Unit system

Imperial / US

Convert miles per hour

Km/h → Mph Mph → Km/h Mph → Meters per Second Knots → Mph Meters per Second → Mph Mph → Feet per Second Mph → Knots Mph → Mach

All speed units

Unit	Symbol	System
meters per second	m/s	Metric
kilometers per hour	km/h	Metric
miles per hour	mph	Imperial / US
feet per second	ft/s	Imperial / US
knots	kn	Nautical & Aviation
mach	Ma	Scientific