Convert speed between km/h, mph, m/s, knots and feet per second instantly. Common conversions include kilometres per hour to miles per hour and metres per second to km/h.
How it works
1Enter the speed value.
2Select the units to convert from and to.
3The converted speed appears instantly.
Frequently asked questions
How do I convert km/h to mph?
Multiply km/h by 0.6214. For example, 100 km/h = 62.14 mph.
How fast is 1 knot?
One knot equals 1.852 km/h or about 1.15 mph.
How do I convert m/s to km/h?
Multiply m/s by 3.6. For example, 10 m/s = 36 km/h.
Is this converter free?
Yes — it is free and runs entirely in your browser.