How to use the Speed Converter
- Enter a value in the “From” box
- Choose the units to convert from and to (or tap a quick unit)
- Read the result instantly; the table below shows the value in every unit
About this tool
Multiply m/s by 3.6 to get km/h, and multiply km/h by 0.621371 to get mph. A knot is one nautical mile per hour (1.852 km/h), used by pilots and sailors. Mach 1 is the speed of sound, which depends on air temperature. This converter uses 340.29 m/s, the speed at sea level and 15 °C.
Frequently asked questions
How many km/h is 60 mph?
96.56 km/h.
What is a knot in mph?
1 knot = 1.15078 mph.
How fast is Mach 1?
About 1,225 km/h (761 mph) at sea level. It is lower at altitude, where the air is colder.
Related tools
Updated · Built and maintained by the UtilityBright team · About our tools · Report a problem