Speed Converter
km/h, mph, knots and m/s.
1 meter per second = 3.6 km/h. Enter any value to convert meters per second (m/s) to kilometers per hour (km/h), or use the table below for common values.
km/h = m/s × 3.6
Example: 10 m/s = 36 km/h. To convert the other way, use m/s = km/h × 0.2777777778.
Quick mental estimate: multiply by about 3.6.
| Meters per Second (m/s) | Kilometers per Hour (km/h) |
|---|---|
| 1 m/s | 3.6 km/h |
| 5 m/s | 18 km/h |
| 10 m/s | 36 km/h |
| 20 m/s | 72 km/h |
| 30 m/s | 108 km/h |
| 40 m/s | 144 km/h |
| 50 m/s | 180 km/h |
| 60 m/s | 216 km/h |
| 70 m/s | 252 km/h |
| 80 m/s | 288 km/h |
| 90 m/s | 324 km/h |
| 100 m/s | 360 km/h |
| 120 m/s | 432 km/h |
| 150 m/s | 540 km/h |
| 200 m/s | 720 km/h |
| 300 m/s | 1,080 km/h |
The meter per second is the SI unit of speed, used in physics, engineering and for wind speed in weather science.
Kilometers per hour is the speed unit on road signs and speedometers in most of the world.
Use the formula km/h = m/s × 3.6. For example, 10 m/s = 36 km/h.
1 m/s = 3.6 km/h.
Use m/s = km/h × 0.2777777778. 1 km/h = 0.2777777778 m/s.