Velocity
km/htom/s
Convert kilometres per hour (km/h) to metres per second (m/s).
Factor1 km/h = 0.2777778 m/s
Converter
km/h
Accepts numbers or expressions, e.g. 150 + 14.7
Result
m/s
Rendered to 6 significant figures.
Formula
Formula
m/s = km/h × 0.2777778
Multiply any value in kilometres per hour by 0.2777778 to obtain the value in metres per second.
Worked example
Convert 100 km/h to m/s.
- 01Start with 100 km/h.
- 02Multiply by the conversion factor: 100 × 0.2777778 = 27.7778 m/s.
Result100 km/h = 27.7778 m/s
Conversion table
| km/h | m/s |
|---|---|
| 1 | 0.27778 |
| 2 | 0.55556 |
| 5 | 1.3889 |
| 10 | 2.7778 |
| 20 | 5.5556 |
| 50 | 13.889 |
| 100 | 27.778 |
| 200 | 55.556 |
| 500 | 138.89 |
| 1000 | 277.78 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from km/h to m/s?
1 km/h equals 0.2777778 m/s. To convert, multiply the value in kilometres per hour by 0.2777778.
How do I convert 1 km/h to m/s?
1 km/h = 0.277778 m/s. For any value, multiply by 0.2777778.
How do I convert m/s back to km/h?
Divide by the same factor — or equivalently, multiply by 3.6. So 1 m/s = 3.6 km/h.
When would I need to convert kilometre per hour to metre per second?
Velocity conversions are needed for fluid flow analysis (line velocity targets, erosional limits), gas-stream calculations, and equipment specs that mix m/s, ft/s and engineering speed units.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).