Speed Calculator
Find average speed in m/s, km/h and mph from total distance and positive elapsed time.
Formula
Average speed = total distance / elapsed time.
Total distance: 60 mi · Elapsed time: 60 min · Meters per second ≈ (60 mi × 1,609.344 m/mi)÷(60 min × 60 s/min) · Kilometers per hour ≈ (26.8224)×3.6 · Miles per hour ≈ (26.8224)÷0.44704
How to use
- Enter total distance traveled.
- Enter positive elapsed time.
- Read average speed in three units.
Examples
- 100 m in 10 s gives 10 m/s or 36 km/h.
Frequently asked questions
Is this instantaneous speed?
No. It is the average over the whole entered interval.
Should I enter displacement?
Use total path length for speed; displacement gives average velocity instead.
What happens at zero time?
Zero time is not allowed because division by zero is undefined.
Sources
Updated: