Speed Converter — km/h to mph, m/s, knots & more
The Speed Converter instantly converts between all common speed units — kilometres per hour, miles per hour, metres per second, knots, and more. Whether you are converting driving speeds, aircraft speeds, or wind speeds, this free tool does the maths in an instant.
How to Use This Calculator
- 1
Enter the speed value to convert.
- 2
Select the unit you are converting from.
- 3
Select the target unit.
- 4
Click Convert to see the result.
Frequently Asked Questions
Multiply km/h by 0.621371 to get mph. Or divide by 1.60934. For example, 100 km/h = 62.14 mph.