MPH = Miles ÷ Hours
Use the formula: speed in MPH = distance in miles ÷ time in hours
Convert minutes to hours by dividing by 60
Convert seconds to hours by dividing by 3600
If distance is in feet, convert to miles by dividing by 5280
If distance is in kilometers, convert to miles by multiplying by 0.621371
Example: 100 miles ÷ 2 hours = 50 MPH
Example: 30 miles ÷ 0.5 hours = 60 MPH
Example: 15 miles ÷ 45 minutes = 15 ÷ 0.75 = 20 MPH