Unit Converter - Speed

Speed units

The speed converter enables conversion between speed units — from meters per second and kilometers per hour, through miles per hour and knots, to Mach number. Useful in physics, automotive, aviation, and sailing.

Overview of speed units

• Meters per second [m/s]: This is the SI unit of speed. It corresponds to the speed of moving one meter per second. It is used in natural sciences and engineering.
• Kilometers per hour [km/h]: Kilometer per hour is a unit of speed that expresses the number of kilometers traveled in one hour. It is widely used in everyday life to measure the speed of vehicles such as cars.
• Kilometers per second [km/s]: This is a unit of speed that indicates the number of kilometers traveled in one second. It is used in scientific and technical contexts where precise speed determination is required.
• Feet per second [ft/s]: Foot per second is a unit of speed expressing the number of feet traveled in one second. It is often used in the United States and some other English-speaking countries.
• Miles per hour [mph]: Mile per hour is a unit of speed expressing the number of miles traveled in one hour. It is commonly used in the United States and other countries where the metric system is not dominant.
• Miles per second [mps]: This unit indicates the number of miles traveled in one second. It is used in scientific contexts, especially in fields related to astronautics and theoretical physics.
• Knots [knots]: A knot is a unit of speed used mainly in maritime navigation and aviation. 1 knot equals 1.852 km/h ~ 0.514 m/s.
• Mach [Mach]: Mach describes the speed of an object relative to the speed of sound in a given medium. On Earth, the speed of sound is about 343 m/s (1225 km/h). Therefore, 1 Mach corresponds to the speed of an object equal to the speed of sound in a given medium.

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