Speed converter
Convert speed between metres per second, kilometres per hour and miles per hour.
Result for the values shown.
Calculations run in your browser.
What to enter
| Input | Meaning and units |
|---|---|
| Value | Enter value using the definition in the method and example. |
| From | Select the unit or currency in which the entered number is currently expressed. |
| To | Select the unit or currency you need for the answer. |
Understanding your result
The converted value describes the same velocity quantity in the selected target unit. Display rounding does not add precision to the original measurement.
Common mistakes
- Confusing the source and target units, or overlooking a prefix or case-sensitive symbol.
Check your calculation
- Convert to the target unit and then reverse the direction. Within display rounding, you should recover the original value.
Read the velocity measurement guide · Calculation checks, sources and review limits
How do I express this speed in another unit?
Enter the known speed value and choose its source and target units. The converter expresses the same quantity in the selected target unit.
Common uses
- Compare speeds expressed in different units.
- Translate a speed before a distance-and-time calculation.
How it works
The calculation passes through a shared base unit. Factors are stored centrally; calculations use floating-point arithmetic and display up to 12 significant digits. Keep extra precision until the final result.
Worked example
60 miles per hour = 96.56064 kilometres per hour.