Work out speed, distance or time when you know the other two. Choose what to calculate, enter the two known values, and get the answer with any units you like, such as km and km/h or miles and mph.
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How it works
The three quantities are linked by distance = speed × time. Rearranged, time is distance divided by speed and speed is distance divided by time. Time is entered in hours and minutes and converted to hours. Use consistent units: if speed is in km/h, distance is in km.
Example
Travelling at 60 km/h for 2 hours 30 minutes covers 150 km. Covering 150 km at 60 km/h takes 2 h 30 min.
Frequently asked questions
How do I calculate travel time?
Divide the distance by the speed. 150 km at 60 km/h is 2.5 hours.
What units can I use?
Any, as long as speed and distance match, for example km with km/h or miles with mph.
Does it account for stops?
No. It assumes a constant speed.
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This calculator is for general guidance only.