Miles per hour is the imperial and United States customary unit of speed. It is shortly called as MPH or mi/h. 1Mph is exactly equal to 0.44704 m/s and 1.609344 km/h. It measures the number of statute miles covered in one hour. Kilometre per hour is unit of speed. It is the measure of number of kilometre travelled in an hour. It is abbreviated as km/h or kmÂ·h-1. Use the online conversion calculator to convert from miles per hour to kilometre per hour.
1 MPH = 1.60934 KPH , Hence, 8 Mi/hr is equal to
= 8 x 1.60934 km/hr
=12.87 km/hour .