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Speed Distance Time Calculator
Solve for speed, distance or time from the other two values, with the answer shown in matching units.
Solve for speed, distance or time
Result: —
In other units: —
Formula: —
How to use the Speed Distance Time Calculator
- Choose whether you want to solve for speed, distance or time.
- Enter the two values you already know in the boxes.
- Read the answer with the matching formula and unit conversion.
Features
- Solves for speed, distance or time
- Answers also shown in m/s, mph or seconds
- Shows the formula that was used
- Runs locally, no uploads
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Frequently Asked Questions
Common questions about the free online speed distance time calculator.
Enter the distance in kilometres and the time in hours and the calculator divides distance by
time to give speed in km/h.
Speed equals distance divided by time, written as v = d / t. Rearranged, distance is speed
times time and time is distance over speed.
The average speed is 50 kilometres per hour, because 100 kilometres divided by 2 hours equals
50 km/h.
Divide the speed in kilometres per hour by 3.6. For example 50 km/h is about 13.89 metres per
second.
Divide the speed in kilometres per hour by 1.609344. For example 100 km/h is about 62.14
miles per hour.
Switch the solve mode to time and enter the distance and the speed. The tool divides distance
by speed to give hours.
Yes. In time mode the answer is also written out as hours, minutes and seconds so you can
read a journey length at a glance.
Average speed is the total distance travelled divided by the total time taken, which smooths
out any changes along the way.
No. Every calculation runs locally in your browser, so the numbers you enter are never sent
anywhere or stored.
Yes. It is completely free and unlimited, with no account, no sign-up and no cap on how many
times you use it.
Last updated: October 10, 2026