Speed Converter
Convert speed between km/h, mph, meters per second, feet per second, and knots.
Speed Converter
Very small or large results use scientific notation: 1E-9 means 0.000000001.
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What This Converter Does
Speed is distance covered per unit of time, like km per hour. Converting means rescaling both parts - the distance unit and the time unit - which is why 1 m/s works out to 3.6 km/h.
Convert a speed between kilometers per hour, miles per hour, meters per second, feet per second, and knots.
How to Use It
- Enter the value.
- Choose the unit to convert from and to.
- Read the converted speed.
Worked Examples
| From | To | Result |
|---|---|---|
| 100 km/h | mph | 62.14 |
| 60 mph | km/h | 96.56 |
| 1 m/s | km/h | 3.6 |
| 10 knots | mph | 11.51 |
FAQ
How do you convert km/h to mph?
Multiply km/h by about 0.621371 (or divide by 1.609344). So 100 km/h is about 62 mph.
How fast is 1 meter per second?
3.6 km/h, or about 2.24 mph.