How to use this speed converter
Enter the requested values above and select Calculate. The result updates immediately on the page, so you can change one value and compare different scenarios without leaving the calculator.
Formula and method
Example
Convert 60 mph to km/h or 10 m/s to mph.
What this calculator is useful for
Convert speed between miles per hour, kilometers per hour, meters per second and knots. It is designed for quick estimates and everyday problem solving. When a calculation affects a contract, tax filing, medical decision or other high-stakes situation, verify the result with the appropriate professional or authoritative source.
Frequently asked questions
What does the Speed Converter calculate?
Convert speed between miles per hour, kilometers per hour, meters per second and knots.
How does the calculation work?
Values are converted through meters per second as a common base unit.
Is this calculator free?
Yes. ERICH Calculators is free to use and no account is required.