Miles per hour is a unit of speed measurement which defines the average number of miles covered in an hour.
To calculate speed in mph, convert the distance covered in miles and then divide that value with the amount of time in hours.
MPH formula = Distance in Miles / Time in Hours.
Let's see an MPH example : If an object covers 23 miles in 4 hrs the it's average speed in MPH would be 23 / 4 = 5.75 mph.
