Meters Per Second to Kilometers Per Hour
Meters per second is the SI unit of speed, used in physics and to describe wind speed in weather forecasts. Kilometers per hour is the standard speed unit on road signs and speedometers outside the US and UK. 1 m/s equals 3.6 km/h, so converting between them is a matter of multiplying by that fixed factor — type any value into the converter below and both sides update instantly as you type.
Both units belong to speed, measured here against speed's base unit (m/s) — every other speed unit on this site converts through that same reference point, which is why the table below can also be read as a quick cross-check against nearby values.
Formula
km/h = m/s × 3.6
m/s = km/h × ≈0.277778
Worked example: 5 m/s × 3.6 = 18 km/h.
Conversion table
| Meter per second (m/s) | Kilometer per hour (km/h) |
|---|---|
| 1 m/s | 3.6 km/h |
| 2 m/s | 7.2 km/h |
| 3 m/s | 10.8 km/h |
| 5 m/s | 18 km/h |
| 10 m/s | 36 km/h |
| 20 m/s | 72 km/h |
| 25 m/s | 90 km/h |
| 50 m/s | 180 km/h |
| 100 m/s | 360 km/h |
| 250 m/s | 900 km/h |
| 500 m/s | 1,800 km/h |
| 1,000 m/s | 3,600 km/h |
Frequently asked
- How many Kilometers per hour in a meter per second?
- 1 m/s equals 3.6 km/h.
- How do I convert Meters per second to Kilometers per hour?
- Multiply the value in m/s by 3.6 to get km/h. The converter above does this instantly as you type.
- Is the conversion exact?
- Yes — Meter per second and Kilometer per hour are both defined by a fixed conversion factor to speed's base unit (m/s), so the result shown is exact to the precision displayed, not an approximation.