Metres per second to kilometres per hour
Multiply metres per second by 3.6 to get kilometres per hour.
15 m/s = 54 km/h
How to convert metres per second to kilometres per hour
The kilometre per hour is kilometres travelled per hour, the metric speed unit for vehicles. The metre per second is the SI unit of speed, one metre travelled per second.
Worked example — 15 m/s: 15 × 3.6 = 54 km/h.
Metres per second to kilometres per hour table
| Metres per second | Kilometres per hour |
|---|---|
| 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 |
| 15 m/s | 54 km/h |
| 20 m/s | 72 km/h |
| 25 m/s | 90 km/h |
| 30 m/s | 108 km/h |
| 50 m/s | 180 km/h |
Reverse and related
About metres per second and kilometres per hour
Metre per second (m/s)
1 m/s = 3.6 km/hDefinition. The SI unit of speed, one metre travelled per second
History and origin
The metre per second is the coherent SI unit of speed, built directly from the base units of length and time. It is the natural choice wherever physics equations are involved.
Current use
Metres per second are used in science and engineering, and to report wind speed in meteorology.
Source: NIST Handbook 44, Appendix C (Tables of Equivalents — international nautical mile); speeds derived from the exact mile, foot and hour
Kilometre per hour (km/h)
1 km/h = 0.277778 m/sDefinition. Kilometres travelled per hour, the metric speed unit for vehicles
History and origin
The kilometre per hour combines the metric kilometre with the hour, and became the standard speed unit as countries adopted the metric system and built road networks. It equals exactly one thousand metres per hour.
Current use
Kilometres per hour is the speed unit on car speedometers and road signs across most of the world.
Source: NIST Handbook 44, Appendix C (Tables of Equivalents — international nautical mile); speeds derived from the exact mile, foot and hour
Where people use this
Metres per second: physics, wind speed. Kilometres per hour: vehicle speed outside the US, speed limits. 10 m/s is exactly 36 km/h.
Every value is carried to full double precision; the display is rounded.
Both units are defined in NIST Handbook 44, Appendix C (Tables of Equivalents — international nautical mile); speeds derived from the exact mile, foot and hour.
Questions people ask
How many km/h is 10 m/s?
10 m/s is exactly 36 km/h.
How do I convert m/s to km/h?
Multiply by 3.6; 25 m/s is 90 km/h.
How many km/h is 5 m/s?
5 m/s is 18 km/h.