Speed is distance divided by time, and it can be expressed in various units. This tool allows quick and accurate conversion among km/h, mph, m/s, knots, Mach, and more. Easily handle speed units used in aviation, marine navigation, science, sports, and many other fields.

• Kilometers per hour (km/h): Indicates how many kilometers are traveled in one hour. Commonly used on car speedometers.
• Miles per hour (mph): Used in the US, UK, and some other countries, indicating how many miles are traveled in one hour.
• Meters per second (m/s): The SI unit for speed, widely used in science and engineering.
• Knot (kn): Used in maritime and aviation, equal to 1 nautical mile per hour. 1 knot is about 1.852 km/h.
• Mach (Mach): A ratio of speed relative to the speed of sound, mainly used in aviation. Mach 1 is about 340 m/s at sea level.
• Feet per second (ft/s): A speed unit used primarily in the US, especially in ballistics or sports.
• Speed of light (c): Approximately 299,792,458 m/s in a vacuum. Used in astronomy and physics.