How fast were you going? Enter a distance and the time it took to get your average speed in kilometres per hour, miles per hour and metres per second.
How to Use
- Enter the distance travelled and choose its unit.
- Enter the time taken and choose its unit.
- Click Calculate Speed to see your speed in km/h, mph and m/s.
Key Features
- Three units at once — km/h, mph and m/s from a single calculation.
- Flexible inputs — mix kilometres with minutes or miles with seconds.
- Great for runners and drivers — check pace against speed limits or training goals.
- 100% private — nothing you enter is sent anywhere or stored.
FAQs
Is this average speed or top speed?
Average speed across the whole distance. Your actual speed will have varied along the way.
How accurate is the result?
As accurate as your inputs. Measure distance and time carefully for the best figure.
Can I convert between speed units only?
Yes. Enter 1 as the distance and 1 hour as the time to see the unit equivalents.
Why does mph differ from km/h?
One mile equals 1.609 kilometres, so mph figures are always lower than km/h for the same speed.
Related Tools
Try these related tools: Unit Converter, Time Zone Converter and Stopwatch.