Enter any two values to calculate the third. Uses the formula: Speed = Distance ÷ Time
Speed = Distance ÷ Time. For example, traveling 100 miles in 2 hours = 50 mph.
Distance = Speed × Time. Driving at 60 mph for 3 hours covers 180 miles.
Time = Distance ÷ Speed. Covering 300 miles at 60 mph takes 5 hours.
100 km/h ≈ 62.14 mph. To convert km/h to mph, multiply by 0.621371.
Speed is how fast something moves (scalar). Velocity includes direction (vector). This calculator deals with speed.
Divide minutes by 60. For example, 45 minutes = 0.75 hours. Or use the hours/minutes/seconds fields in our calculator.
Average speed = Total distance ÷ Total time. It accounts for varying speeds during a trip.
Yes, completely free with no signup. All calculations run in your browser.