Speed Converter
Convert speed units. km/h, m/s, mph, knots and Mach.
Note: These calculations are for informational purposes only and do not replace professional tax or financial advice. All information without guarantee.
Frequently Asked Questions
How do I convert km/h to m/s?
Divide km/h by 3.6 to get m/s, or multiply m/s by 3.6 to get km/h. For example, 100 km/h equals about 27.78 m/s.
What are common speed units?
km/h is used in most countries, mph in the UK and US, knots for nautical and aviation, Mach for supersonic speeds (1 Mach is approximately 1,235 km/h at sea level).
What is the Speed Converter?
The speed converter converts between km/h, m/s, mph, knots and other speed units.
How does the Speed Converter work?
Enter the value and source unit. The calculator converts to all common speed units.
Key Data and Facts
1 km/h = 0.2778 m/s. 1 mph = 1.609 km/h. 1 knot = 1.852 km/h. Speed of sound: approx. 1,235 km/h (Mach 1).
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