How to convert speed
- Type the speed.
- Choose the unit you have and the one you want.
- Read the answer and the table.
About this tool
Type a speed, choose the units, and read the answer. Kilometres per hour, miles per hour, metres per second, feet per second and knots are all covered. One mile per hour is exactly 0.44704 metres per second, and one knot is one nautical mile per hour, or 1.852 kilometres per hour.
Common questions
How do I convert km/h to mph?
Divide by 1.609344. So 100 km/h is about 62.14 mph.
How do I convert km/h to m/s?
Divide by 3.6. So 36 km/h is 10 m/s.
What is a knot?
One nautical mile per hour, which is exactly 1.852 km/h. It is used at sea and in the air.
Is it free to use?
Yes. There's no sign-up, and you can use it as often as you like.
Is my text uploaded anywhere?
No. This tool runs inside your browser, so what you enter stays on your device.
Do I need to install anything?
No. It works in your browser on a computer or a phone.