The abbreviations most often used are km/h or kph.
Mph...
kilometers per hour
About 1,235.97619 kilometers per hour.
52 miles per hour = 83.7 kilometers per hour.
40 kilometers per hour = 24.85 miles per hour.
46.6 m/h (1.609 kilometers/1 mile) = 75.0 kilometers per hour =================
879.7 kilometers per hour.
48.28 kilometers per hour.
56 kilometers per hour is 34.8 miles per hour.
Take the kilometers per hour and divide by 60. (60 minutes in an hour)
15 kilometers per hour is 9.32 miles per hour.
22 mph = 35.41 kilometers per hour.