Speed Converter
Convert km/h, mph, m/s, knots, and feet per second with precise results.
Result
Enter a value to convert.
The calculation runs locally in your browser.
What this tool converts
Convert road, navigation, and motion speeds across km/h, mph, m/s, knots, and ft/s.
How the conversion works
Enter a value, choose source and target units, and the result updates immediately. Dynamic equivalents use the same engine and internal precision.
Target speed = Source speed × factor in m/s ÷ target factor
Verifiable example
100 km/h is approximately 62.137119 mph; 1 knot is exactly 1.852 km/h.
Calculations run locally in the browser and require no external API.
Frequently asked questions
How do I convert km/h to mph?
Multiply km/h by approximately 0.6213711922.
How many km/h is 1 m/s?
1 m/s is exactly 3.6 km/h.
What is a knot?
A knot is one nautical mile per hour, exactly 1.852 km/h.