Speed Converter
Convert between km/h, metres per second, miles per hour and knots. Enter one speed to see all four.
- Metres per second (m/s)
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- Miles per hour (mph)
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- Knots
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What is the Speed Converter?
This speed converter shows a speed in kilometres per hour, metres per second, miles per hour and knots together. It uses exact factors: 1 mile per hour is 1.609344 km/h and 1 knot is 1.852 km/h. Choose the unit you start with and read all four results.
How it works
The speed is first converted to kilometres per hour: 1 m/s is 3.6 km/h, 1 mph is 1.609344 km/h and 1 knot is 1.852 km/h. Each result is the km/h figure divided by the factor of the target unit.
How to use it
- Type the value you want to convert.
- Choose the unit it is currently in.
- Read every converted unit in the results.
- Change the number or unit to convert again.
Speed Converter — FAQ
How do I convert km/h to m/s?
Divide by 3.6. For example, 36 km/h is 10 m/s. The tool does this for you.
What is a knot?
A knot is one nautical mile per hour, which is exactly 1.852 km/h. It is used in shipping and aviation.
How fast is 100 km/h in mph?
About 62.14 miles per hour. The default value in the tool shows this.