What is mile per hour?

Mile per hour is a unit of speed equal to one mile travelled in one hour. It is the standard unit for road speeds, vehicle performance ratings, and weather reports in the United States and United Kingdom.

What is kilometre per hour?

Kilometre per hour is a unit of speed equal to one kilometre travelled in one hour. It is the most widely used unit for road speed limits, vehicle speedometers, and wind speeds in metric countries.

Worked examples

1 mile per hour = 1.609344 kilometre per hour

1 kilometre per hour = 0.27777778 metre per second

More Speed conversions

• Convert mile per hour to metre per second
• Convert mile per hour to kilometre per hour
• Convert mile per hour to knot
• Convert mile per hour to foot per second
• Convert mile per hour to metre per minute
• Convert mile per hour to kilometre per second
• Convert mile per hour to mach (approx at sea level)
• Convert mile per hour to centimetre per second
• Convert mile per hour to mile per minute

Assumption: Mach uses an approximate sea-level reference (about 340.29 m/s).