How it works
Divide total distance by total elapsed time, including stops. This is average speed, not instantaneous speed.
v = d/t
Worked example
Show example inputs and result
Distance: 150 · Elapsed time: 2.
- Average speed
- 75 km/h
Questions and answers
Why are some results rounded?
Results display up to 8 decimal places. Calculations use the unrounded values; very small values use scientific notation. JavaScript floating-point arithmetic can introduce tiny rounding differences.
Are my inputs sent to a server?
The calculator processes inputs in your browser. Its code does not send your values to a server.
Method reviewed: October 8, 2026 · Methods & accuracy