How is average speed calculated?

Divide the total distance by the total time. 120 km in 1.5 hours is 80 km/h.

How do I convert km/h to mph and m/s?

Divide km/h by 1.609 for mph, and by 3.6 for m/s. This tool shows all three.

Average Speed Calculator

Free average speed calculator. Enter a distance and the time taken (hours and minutes) to get the average speed in km/h, mph and m/s. Useful for trips, runs and physics problems.

Calculate average speed from a distance and a travel time.

v = \frac{d}{t}

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