Speed Converter
Convert between km/h, m/s, mph, knots and feet per second. Free, fast and easy to use.
All units
| Meter per second | 27.777778 m/s |
|---|---|
| Kilometer per hour | 100 km/h |
| Mile per hour | 62.137119 mph |
| Knot | 53.99568 kn |
| Foot per second | 91.134442 ft/s |
How it works
Type a speed and pick the units. One meter per second is exactly 3.6 km/h, one mile per hour is 1.609344 km/h and one knot – used at sea and in aviation – is one nautical mile per hour, 1.852 km/h.
Worked examples
- 90 km/h = 25 m/s
- 60 mph = 96.56064 km/h
- 20 kn = 37.04 km/h
Calculations run locally in your browser. Results are for information only — for engineering, electrical or financial decisions, verify the assumptions and applicable standards.
Frequently asked questions
How do I convert km/h to m/s?
Divide by 3.6. For example, 90 km/h is 25 m/s.
How fast is 100 km/h in mph?
100 km/h is about 62.14 mph.