Choose what to find, then fill in the other two values.
Formula
speed = distance / time distance = speed × time time = distance / speed
Worked example
120 km in 1.5 hours is 80 km/h.
Frequently asked questions
How do I convert km/h to m/s?
Divide by 3.6.
How do I enter 1 h 30 min?
As 1.5 hours.
Is this average speed?
Yes, total distance divided by total time.
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Results are estimates for information only. Check important figures with a professional.