Convert km/h, mph, knots, Mach, and the speed of light in one place
Automatically convert all units based on 1 source unit. Click a row to set that unit as the target.
| Unit | Converted Value (based on 1 source unit) |
|---|
Speed unit conversion is used to convert between speed units such as meters per second, kilometers per hour, miles per hour, feet per second, knots and Mach. It is suitable for vehicle speeds, marine speeds, aviation speeds, sports and physics learning.
The tool supports common speed units including meters per second, kilometers per hour, miles per hour, feet per second, knots, Mach and the speed of light.
Enter a speed value and select the source unit and target unit. The system automatically calculates the conversion result. The reference table also allows you to view the corresponding values for multiple speed units at the same time.
1 meter per second equals 3.6 kilometers per hour; 1 kilometer per hour is approximately 0.621371 miles per hour; 1 mile per hour equals 1.609344 kilometers per hour; 1 knot equals 1 nautical mile per hour, approximately 1.852 kilometers per hour.
Mach number represents the ratio of speed to the local speed of sound, so Mach is not a unit that always corresponds to a fixed speed. The tool uses a specified standard-atmosphere reference for conversion. The actual speed of sound is affected by environmental factors such as temperature and altitude.
Speed conversion can be used for vehicle speedometers, traffic speed limits, navigation, aviation, sports, physics learning and engineering calculations.
1 kilometer per hour is approximately 0.2777778 meters per second.
1 mile per hour equals 1.609344 kilometers per hour.
1 knot equals 1.852 kilometers per hour.
Yes, but the speed-of-sound reference must be specified. Mach number depends on the local speed of sound, so the actual speed corresponding to Mach can vary under different temperature and altitude conditions.
Comments 0