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.