Speed Distance Time Calculator
Find how long a trip takes when you know the distance and your average speed. Change either number and the time follows.
- Free
- Works offline after your first visit
- Saves on this device
- No sign-up
- Updated
How it works
Time equals distance divided by speed. The engine converts your units first, so miles with miles per hour and kilometers with kilometers per hour both work.
Speed is the distance covered in each hour, so a higher speed means a shorter time for the same distance.
Worked example
A trip of 120 mi at an average of 60 mph takes 2 h.
Questions
Can I find the distance or the speed instead?
This version works out the time. To find speed, divide the distance by the time. To find distance, multiply the speed by the time.
Why does a small change in speed matter so much?
Time depends on the reciprocal of speed, so slow speeds add time quickly. Going from 50 to 45 adds real minutes on a long trip.
Does this include stops?
No. Add the time for breaks, fuel and traffic yourself, or use the drive time calculator for a trip with breaks.
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