Convert kilometres per hour to metres per second
Enter a value in kilometres per hour (km/h) to get metres per second (m/s). One kilometre per hour is 0.277778 metres per second; one metre per second is 3.6 kilometres per hour.
How to use the Kilometre per hour to metre per second
- Type the number of kilometres per hour.
- Click Convert.
- Read the result in metres per second, plus the same value in every other speed unit.
km/h to m/s formula
metres per second = kilometres per hour × 0.277778. To go the other way, kilometres per hour = metres per second × 3.6 (see metres per second to kilometres per hour).
Worked example
12 km/h × 0.277778 = 3.3333 m/s.
Kilometres per hour to metres per second conversion table
| Kilometres per hour | Metres per second |
|---|---|
| 0.1 km/h | 0.027778 m/s |
| 0.5 km/h | 0.138889 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 | 1.3889 m/s |
| 10 km/h | 2.7778 m/s |
| 20 km/h | 5.5556 m/s |
| 25 km/h | 6.9444 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 | 138.8889 m/s |
| 1,000 km/h | 277.7778 m/s |
About the kilometre per hour
Road speed limits in most countries.
About the metre per second
The SI unit of speed. Wind speed in forecasts across much of Europe.
Related conversions
metres per second to kilometres per hour · kilometres per hour to miles per hour · kilometres per hour to knots · any unit.
Frequently asked questions
How many metres per second in a kilometre per hour?
0.277778 metres per second.
How many kilometres per hour in a metre per second?
3.6 kilometres per hour.
Is the factor exact?
The factor 0.277778 is derived from the units' exact definitions; only the display is rounded.
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Last updated 2026-09-23.