Miles per Hour to Kilometers per Hour

What are Miles per Hour and Kilometers per Hour?

Miles per hour (mph) is a unit of speed in the imperial system. It measures the number of miles traveled in one hour. It is the standard speed measurement in the United States, the United Kingdom, and several other countries.

Kilometers per hour (km/h) is a unit of speed in the metric system. It measures the number of kilometers traveled in one hour. It is used in most countries around the world for speed limits and vehicle speedometers.

MPH to KM/H Formula

To convert miles per hour to kilometers per hour, use this formula:

Common Speed Conversions

• 30 mph = 48.28 km/h (city driving)
• 55 mph = 88.51 km/h (US highway)
• 60 mph = 96.56 km/h
• 65 mph = 104.61 km/h (US interstate)
• 70 mph = 112.65 km/h (UK motorway)
• 100 mph = 160.93 km/h

Common Applications

• Travel: understanding speed limits when driving abroad
• Sports: comparing speeds in athletics, cycling, and motorsport
• Aviation: converting wind and airspeed measurements
• Shipping: converting vessel speeds for international logistics