Meters per Second to km/h Converter
km/h
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mph
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1 m/s = 3.6 km/h · 1 m/s = 2.23694 mph
How to convert meters per second to km/h
To convert meters per second to kilometers per hour, multiply by 3.6. For example, 10 m/s × 3.6 = 36 km/h. Going the other way, divide km/h by 3.6 to get m/s. So 100 km/h ÷ 3.6 = 27.78 m/s.
The factor of 3.6 comes from unit conversion: 1 km = 1000 m and 1 hour = 3600 seconds, so 1 m/s = 1000/3600 km/h = 1/3.6 km/h, meaning 1 m/s × 3.6 = 1 km/h.
Meters per second is the SI unit of speed used in science and physics. Kilometers per hour is used for everyday speeds like driving and weather. This conversion is commonly needed in physics problems, sports science, and engineering.
Meters per second to km/h conversion table
| m/s | km/h | Common reference |
|---|---|---|
| 1 m/s | 3.6 km/h | slow walk |
| 3 m/s | 10.8 km/h | brisk walk |
| 5 m/s | 18 km/h | jogging speed |
| 10 m/s | 36 km/h | world class sprint |
| 12.4 m/s | 44.64 km/h | Usain Bolt top speed |
| 20 m/s | 72 km/h | city driving |
| 28 m/s | 100.8 km/h | highway speed |
| 50 m/s | 180 km/h | high speed train |
| 340 m/s | 1224 km/h | speed of sound |