Speed & Velocity Converter (km/h, mph, m/s, knots, ft/s)
Performs high-precision velocity conversions between kilometers per hour (km/h), miles per hour (mph), meters per second (m/s), knots, and feet per second.
How This Calculation Formula is Formulated
Calculates precise velocity conversions between metric, imperial, SI scientific, and nautical navigation units.
Variable Definitions & Measurement Units
Converting 100 km/h Highway Speed
Converting 100 km/h into mph, m/s, and knots.
The Definition of a Nautical Knot
A knot is one nautical mile per hour. One nautical mile is historically defined as one minute of arc along a meridian of Earth (1,852 meters).
Because it is directly linked to geographic latitude coordinates, knots and nautical miles remain the universal standard in maritime shipping and international aviation.
Frequently Asked Questions About Speed & Velocity Converter (km/h, mph, m/s, knots, ft/s)
How do you quickly convert km/h to m/s in your head?
Multiply by 5 and divide by 18 (e.g. 72 km/h × 5/18 = 20 m/s).
What is Mach 1?
Mach 1 represents the local speed of sound in air, which is approximately 343 m/s (1,235 km/h or 767 mph) at sea level and 20°C.
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