Handy Units
m/s to km/hm/s → km/h
1 m/s = 3.6 km/h · 1 km/h = 0.277778 m/s
Formula
km/h = m/s × 3.6
Example: 20 m/s = 20 × 3.6 = 72 km/h
These units differ only by a fixed factor: multiply by it to convert, divide to go back. The factors are exact international definitions (for example 1 inch = 2.54 cm exactly); results are rounded only for display.
m/s and km/h chart
| m/s (m/s) | km/h (km/h) |
|---|---|
| 1 m/s | 3.6 km/h |
| 2 m/s | 7.2 km/h |
| 5 m/s | 18 km/h |
| 10 m/s | 36 km/h |
| 20 m/s | 72 km/h |
| 30 m/s | 108 km/h |
| 50 m/s | 180 km/h |
| 100 m/s | 360 km/h |
| km/h (km/h) | m/s (m/s) |
|---|---|
| 10 km/h | 2.77778 m/s |
| 20 km/h | 5.55556 m/s |
| 30 km/h | 8.33333 m/s |
| 40 km/h | 11.1111 m/s |
| 50 km/h | 13.8889 m/s |
| 60 km/h | 16.6667 m/s |
| 80 km/h | 22.2222 m/s |
| 100 km/h | 27.7778 m/s |
| 120 km/h | 33.3333 m/s |
| 150 km/h | 41.6667 m/s |
| 200 km/h | 55.5556 m/s |
| 300 km/h | 83.3333 m/s |
About these units
Meters per second (m/s)Meters per second, the SI unit of speed, often used for wind: 1 m/s = 3.6 km/h.
Kilometers per hour (km/h)Kilometers per hour: the unit for speed and speed limits in most countries.
Questions
How many km/h are in 1 m/s?
1 m/s = 3.6 km/h.
How many m/s are in 1 km/h?
1 km/h = 0.277778 m/s.