mph to km/h

Common values

From (mph)To (km/h)
00.00
0.20.32
0.40.64
0.60.97
0.81.29
11.61
1.21.93
1.42.25
1.62.57
1.82.90
23.22

One mile per hour equals 1.60934 km/h. Multiply your mph value by 1.609 to get km/h.

Formula: km/h = mph × 1.60934

  • 30 mph = 48.28 km/h (typical US residential speed limit)
  • 55 mph = 88.51 km/h (rural US highway)
  • 65 mph = 104.6 km/h (interstate speed limit in many states)
  • 100 mph = 160.93 km/h

US drivers renting cars in metric countries need mph-to-kph conversion to understand speed limits. American sports broadcasting uses mph for pitch speed, ball speed, and race speeds; international audiences need km/h equivalents. The US NASCAR and IndyCar series report speeds in mph; Formula 1 uses km/h.

All US road speed limits are in mph. Interstate speed limits typically range from 55 to 85 mph (88–137 km/h). US speedometers show mph in large numerals with km/h in smaller digits. The fastest land speed record was set at 763 mph (1,228 km/h) at the Bonneville Salt Flats in Utah.

Frequently asked questions

What is 60 mph in km/h?
60 mph = 96.56 km/h.
What is 100 km/h in mph?
100 km/h = 62.14 mph.
What is 70 mph in km/h?
70 mph = 112.65 km/h.

Related converters: Unit converter