Conversion
Speed Converter: km/h, mph, Knots
Convert between speed units.
Speed for travel, sports, and science.
Conversions
- 1 mph = 1.609 km/h
- 1 knot = 1.151 mph
- 1 m/s = 3.6 km/h
References
Walk: 3-4 mph. Highway: 65-75 mph. Sound: 767 mph.
Frequently Asked Questions
km/h to mph?
×0.621. 100km/h = 62.1mph.
What is a knot?
1 nautical mile/hr = 1.852 km/h.
Mach speed?
Mach 1 = speed of sound ≈767mph.