Enter a distance and time to get speed in mph, km/h and metres per second, plus pace per mile.
Understanding the speed calculation
This speed calculator turns a distance and a time into speed, shown in miles per hour, kilometres per hour and metres per second. It also gives your pace per mile.
Use it for driving, cycling, running or any average-speed question.
Worked example
The calculator opens with a distance of 150, time of 2. On those figures the speed is 60. Underneath, km/h comes out at 96.56 and m/s at 26.82. Change any field and every figure updates as you type.
How to fill it in
- Enter the distance and its unit.
- Enter the time in hours, minutes and seconds.
- Read the speed in your preferred units.
Formula reference
speed = distance ÷ time
mph, km/h and m/s are unit conversions of the same result
FAQ
How do I calculate average speed?
Divide the total distance by the total time. 150 miles in 2.5 hours is 60 mph.
How do I convert mph to km/h?
Multiply mph by about 1.609. So 60 mph is roughly 96.6 km/h.
What’s the difference between speed and pace?
Speed is distance per unit time (mph); pace is time per unit distance (minutes per mile). This tool shows both.