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Solve d = v × t for speed, distance or time, mixing units freely — km/h, mph, m/s, knots; km, miles, metres; hours, minutes, seconds.
Also covers: Speed calculator · Distance calculator · Travel time calculator
d = v × t
Speed (v)
60 km/h
In other units
Working
Speed, distance, or time.
The answer appears in your chosen unit and every other one, with the working in SI units.
Distance = speed × time. Rearranged: speed = distance ÷ time and time = distance ÷ speed.
Divide by 3.6: 90 km/h = 25 m/s. 1 mph = 1.609344 km/h exactly.
Yes — total distance divided by total time is the average speed, even if the speed varied along the way.
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