Kilometers Per Hour to Meters Per Second
Kilometers per hour is the standard speed unit on road signs and speedometers outside the US and UK. Meters per second is the SI unit of speed, used in physics and to describe wind speed in weather forecasts. 1 km/h equals ≈0.277778 m/s, 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
m/s = km/h × ≈0.277778
km/h = m/s × 3.6
Worked example: 5 km/h × ≈0.277778 = ≈1.38889 m/s.
Conversion table
| Kilometer per hour (km/h) | Meter per second (m/s) |
|---|---|
| 1 km/h | ≈0.277778 m/s |
| 2 km/h | ≈0.555556 m/s |
| 3 km/h | ≈0.833333 m/s |
| 5 km/h | ≈1.38889 m/s |
| 10 km/h | ≈2.77778 m/s |
| 20 km/h | ≈5.55556 m/s |
| 25 km/h | ≈6.94444 m/s |
| 50 km/h | ≈13.8889 m/s |
| 100 km/h | ≈27.7778 m/s |
| 250 km/h | ≈69.4444 m/s |
| 500 km/h | ≈138.889 m/s |
| 1,000 km/h | ≈277.778 m/s |
Frequently asked
- How many Meters per second in a kilometer per hour?
- 1 km/h equals ≈0.277778 m/s.
- How do I convert Kilometers per hour to Meters per second?
- Multiply the value in km/h by ≈0.277778 to get m/s. The converter above does this instantly as you type.
- Is the conversion exact?
- Yes — Kilometer per hour and Meter per second 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.