Speed Converter
Convert between mph, km/h, m/s, knots, ft/s, and Mach instantly.
Convert
Miles per hour
60 mph
Kilometers per hour
96.5606 km/h
Meters per second
26.8224 m/s
Feet per second
88 ft/s
Knots
52.1386 knots
Mach number
0.078822 Mach
Frequently Asked Questions about the Speed Converter
How fast is 100 km/h in mph?
100 km/h equals about 62.14 mph. The exact factor is 1 km/h = 0.621371 mph, since 1 mile = 1.609344 km.
What is a knot and where is it used?
1 knot equals 1 nautical mile per hour, or exactly 1.852 km/h (about 1.1508 mph). Knots are the standard speed unit in aviation and maritime navigation worldwide.
What is Mach 1?
Mach 1 is the speed of sound, which depends on air temperature. This tool uses sea level at 15 degrees C, where Mach 1 equals 340.29 m/s, about 1,225 km/h or 761 mph.
Where are mph vs km/h used?
Miles per hour is used on road signs in the US, UK, and a handful of other countries. Kilometers per hour is the standard in the rest of the world, including the EU, Canada, and Australia.
How do I convert m/s to km/h quickly?
Multiply meters per second by 3.6 to get km/h. So 10 m/s equals 36 km/h, roughly the speed of a fast sprint or an urban cycle commute.