Speed Distance Time Calculator
Find speed, distance or travel time from the other two values using the classic speed triangle.
Quick answer: enter your details below and click Calculate — your result appears instantly, right here in your browser. Nothing you enter is uploaded or stored.
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Calculators
Enter your details below.
How to use
- Choose what you want to calculate: Speed, Distance or Time.
- Enter the two values you already know.
- Press Calculate to see the missing value.
About this tool
Speed, distance and time are linked by one relationship: distance equals speed multiplied by time. Choose which value you want to find, enter the other two, and the calculator works out the missing one. Just keep your units consistent, for example kilometres with hours, or miles with hours.
Frequently asked questions
Do the units need to match?
Yes. If distance is in kilometres, time should be in hours to get speed in kilometres per hour. Mixing miles with minutes will give a misleading answer.
What if I enter zero for speed or time?
You cannot divide by zero, so the calculator asks for a value greater than zero in that case.