Speed Calculator
Calculate average speed from a distance and travel time, with results in km/h, mph, and meters per second.
Your result
Review your calculated values below.
Ready when you are.
Choose Calculate to see your result.
How to use this calculator
- Enter your values in the labeled fields, keeping the displayed units.
- Choose Calculate or press Enter in a single-line field.
- Review the result and the assumptions below before using it.
Formula and method
Average speed = distance / time. One mile equals 1.609344 kilometers.
Worked example
100 kilometers traveled in two hours gives 50 km/h, approximately 31.07 mph.
What the result assumes
Average speed includes any stops included in your entered duration. It does not describe instantaneous speed.
Common question
Can I use it for a short measured run?
Yes. Select meters and enter the elapsed time in minutes, using decimals when necessary.