Speed Converter
Convert between meters per second, kilometers per hour, miles per hour, knots, and feet per second instantly in your browser.
How to use the Speed Converter
- Enter the value you want to convert.
- Choose the unit you are converting from.
- Choose the unit you are converting to.
- Click Run to see the converted value, for example 100 km/h = 62.14 mph.
How the Speed Converter works
The converter uses meters per second as its base. 1 km/h = 1,000 m ÷ 3,600 s ≈ 0.2778 m/s; 1 mph = 1,609.344 m ÷ 3,600 s = 0.44704 m/s; 1 knot (one nautical mile per hour) = 1,852 m ÷ 3,600 s ≈ 0.5144 m/s; and 1 ft/s = 0.3048 m/s.
Knots are standard in aviation and sailing, mph on UK and US roads, km/h almost everywhere else, and m/s in science and weather wind speeds.
Frequently asked questions
- Is this speed converter free?
- Yes. Convert speed at no cost, with no account required.
- Which units are supported?
- Meters per second, kilometers per hour, miles per hour, knots, and feet per second.