Converters
Speed Converter
Convert speed between km/h, mph, m/s and knots.
Free foreverRuns in your browserNo sign-up
0.621371
1 km/h equals 0.621371 mph.
1 km/h in every unit
| Meter per second (m/s) | 0.277778 |
| Kilometer per hour (km/h) | 1 |
| Mile per hour (mph) | 0.621371 |
| Foot per second (ft/s) | 0.911344 |
| Knot (kn) | 0.539957 |
About the Speed Converter
Convert speed and velocity between km/h, mph, m/s, ft/s and knots.
Enter a value, choose your units, and see the result plus a full table of every unit.
Useful for driving, running, sailing and physics whenever you need km/h in mph or m/s in km/h.
Key features
- 5 common speed units including knots
- Live conversion table for every unit
- One-click swap between from and to
- Copy the result instantly
How to use
- 1Type the speed you want to convert.
- 2Choose the unit you have and the unit you want.
- 3Read the result or copy it in one click.
Examples
km/h to mph
Input:
100 km/hOutput:
62.137119 mphA common highway speed of 100 km/h is about 62 mph.
m/s to km/h
Input:
10 m/sOutput:
36 km/hMultiply meters per second by 3.6 to get km/h.
Frequently asked questions
- How do I convert km/h to mph?
- Multiply the km/h value by about 0.621371. For example, 100 km/h is about 62.14 mph.
- What is a knot?
- A knot is one nautical mile per hour, about 1.852 km/h, used in aviation and sailing.
- Does it run offline?
- Yes. The conversion runs entirely in your browser.