KM/H to M/S Converter
Converts road and wind speeds into meters per second for physics and engineering calculations.
1 km/h = 0.2778 m/s
meters per second
1 km/h = 0.2778 m/s
How to convert kilometers per hour to meters per second
Divide the number of kilometers per hour by 3.6.
Formula
m/s = km/h ÷ 3.6
For a quick estimate, multiply by about 0.277778.
Examples
- 18 km/h ÷ 3.6 = 5 m/s
- 54 km/h ÷ 3.6 = 15 m/s
- 120 km/h ÷ 3.6 = 33.3333 m/s
Kilometers per hour to meters per second conversion table
| Kilometers per hour (km/h) | Meters per second (m/s) |
|---|---|
| 1 | 0.2778 |
| 3.6 | 1 |
| 5 | 1.3889 |
| 10 | 2.7778 |
| 18 | 5 |
| 20 | 5.5556 |
| 36 | 10 |
| 50 | 13.8889 |
| 54 | 15 |
| 72 | 20 |
| 90 | 25 |
| 100 | 27.7778 |
| 108 | 30 |
| 120 | 33.3333 |
| 200 | 55.5556 |
Values rounded to 4 decimal places or 4 significant digits.
About kilometers per hour
Kilometers per hour is the unit on speed-limit signs and speedometers in most of the world. 1 km/h equals 1/3.6 m/s, or about 0.278 m/s.
About meters per second
Meters per second is the SI unit of speed. Physics problems use it, and many weather services report wind speed in m/s.
Frequently asked questions
How many meters per second are in one kilometer per hour?
One kilometer per hour equals 0.2778 meters per second (rounded).
How do I convert kilometers per hour to meters per second?
Divide the number of kilometers per hour by 3.6. For example: 54 km/h ÷ 3.6 = 15 m/s.
How many kilometers per hour are in one meter per second?
One meter per second equals 3.6 kilometers per hour.
Is the km/h to m/s conversion exact?
Yes. The factor follows directly from the official definitions of both units, so the only rounding is in how many decimals are displayed.