What is the Speed Distance Time Calculator?
Solve for speed, distance or time when you know the other two.
Enter find, distance, time and speed and the Speed Distance Time Calculator returns answer and speed in metres per second. Results update as you type, and nothing you enter leaves your device.
How it is calculated
Speed = Distance ÷ Time
Distance = Speed × Time
Time = Distance ÷ Speed
How to use it
- Choose find.
- Enter distance in km.
- Enter time in hours.
- Enter speed in km/h.
- Read answer in the results panel. It updates as you type.
- Change any value to compare scenarios, or use Share to send the result as a link.
Worked example
Common questions
What formula does the Speed Distance Time Calculator use?
It uses: Speed = Distance ÷ Time; Distance = Speed × Time; Time = Distance ÷ Speed.
What do I need to use the Speed Distance Time Calculator?
You need find, distance, time and speed. Sensible starting values are filled in so you can see how it works straight away.
Is the Speed Distance Time Calculator free, and is my data stored?
It is free with no sign-up. The calculation runs in your browser, so the values you enter are not sent to or stored on our server.