Value, From, To
Waiting for input
How this calculator works
Speed is distance divided by time, so speed conversions follow directly from the length definitions. A knot is one nautical mile per hour and is the standard unit in shipping and aviation. Because the mile and the nautical mile are defined exactly in meters, every factor here is exact.
Formula
- 1 mph = 1.609344 km/h = 0.44704 m/s (exact)
- 1 km/h = 1/3.6 m/s
- 1 knot = 1.852 km/h
Worked example
60 mph to kmh
- Value
- 60
- From
- Mile per hour (mph)
- To
- Kilometer per hour (km/h)
Result96.56064 km/h
60 mph = 96.56064 km/h. 1 mph = 1.609344 km/h.
Frequently asked questions
How do I convert mph to km/h?
Multiply by 1.609344. 60 mph is about 96.56 km/h.
How fast is a knot?
1 knot is 1.852 km/h or about 1.151 mph.
How do I convert km/h to m/s?
Divide by 3.6. 36 km/h is 10 m/s.
Sources
More unit converters calculators
Results are estimates based on the values you enter and the published method shown above. They do not replace professional medical, financial or legal advice. Method reviewed October 7, 2026. About this site