Speed Converter

Convert km/h, mph, metres per second, knots and more.

Runs in your browser. Your data and files never leave your device.

About the Speed Converter

Convert speeds for driving, sailing, flying and physics: kilometres per hour, miles per hour, metres per second, feet per second, knots and Mach.

1 mph = 1.609344 km/h
1 knot = 1.852 km/h
1 m/s = 3.6 km/h

What is 100 km/h in mph?

62.14 mph.