Vehicle specifications
Use the result as a check within this type of task, with the assumptions shown above.
MAXScanner Calculator
Speed Converter
Convert nonnegative speed between meters per second, kilometers per hour, miles per hour, knots and feet per second.
Live editable inputs
Change the values and see the calculation update immediately.
Formula and working
The relationship behind the answer stays visible on the page.
Assumptions visible
Rates, dimensions and limitations are kept explicit instead of hidden.
Connected next steps
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62.13711922 mph
100 km/h
Speed conversion uses standard unit factors; values below zero are rejected because this calculator is for speed, not signed velocity.
How to use this calculator
Convert a nonnegative speed between m/s, km/h, mph, knots and ft/s using a common meters-per-second basis.
Step-by-step
- Step 1
Enter the speed value.
- Step 2
Choose the source speed unit.
- Step 3
Choose the target speed unit.
Where this calculator is useful
Travel and navigation
Use the result as a check within this type of task, with the assumptions shown above.
Running, cycling and technical measurements
Use the result as a check within this type of task, with the assumptions shown above.
Common questions
How do I convert km/h to mph?
The calculator applies the standard conversion through meters per second. 1 km/h is about 0.621371 mph.
Are knots supported?
Yes. Knots are available as a source or target unit.
Does this support negative velocity?
No. This page is for speed magnitude and rejects negative values.
Need a different calculation?
Use the calculator library to switch tasks when the question, unit or assumption changes.
Browse all calculatorsCommon speed conversions
km/h to mphmph to km/hknots to km/hm/s to km/h
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