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Speed Converter
Convert speed between kilometres per hour, miles per hour, metres per second, and knots. Runs in your browser.
1 Kilometres/hour =
0.621372
Miles/hour
Your inputs never leave your device.
Convert speed between kilometres per hour, miles per hour, metres per second, and knots. Useful for travel, sport, and weather.
How to use
- Enter the speed value.
- Choose the from and to units.
- The result updates instantly.
Frequently asked questions
How do I convert km/h to mph?
Multiply km/h by about 0.621 to get mph. For example, 100 km/h is about 62.1 mph. Select the units and the tool converts exactly.
What is a knot?
A knot is one nautical mile per hour (about 1.852 km/h), used in aviation and shipping. It's included here.
Does it convert metres per second?
Yes, m/s is the base unit and converts to all the others.