Convert Kilometers per Hour to Meters per Second
km/h to m/s · speed conversion
What are kilometers per hour and meters per second?
Kilometers per hour is the standard metric unit for vehicle speed in most countries. Meters per second is the SI unit of speed, used in physics and science. For reference: a brisk walk is about 5 km/h (3 mph), and highway speed is around 100 km/h (62 mph).
How to convert kilometers per hour to meters per second
1 km/h = 0.277778 m/s. To convert, multiply the number of kilometers per hour by 0.277778. For example, 5 km/h = 1.38889 m/s, and 20 km/h = 5.55556 m/s. To go the other way, multiply meters per second by 3.6 (since 1 m/s = 3.6 km/h).
Kilometers per Hour to Meters per Second conversion table
| Kilometers per Hour (km/h) | Meters per Second (m/s) |
|---|---|
| 1 | 0.277778 |
| 5 | 1.38889 |
| 10 | 2.77778 |
| 30 | 8.33334 |
| 60 | 16.6667 |
| 100 | 27.7778 |
| 120 | 33.3334 |
FAQ
What is 1 km/h in m/s?
1 km/h = 0.277778 m/s. To convert any amount, multiply the number of kilometers per hour by 0.277778.
How do I convert meters per second back to kilometers per hour?
Go the other way: 1 m/s = 3.6 km/h, so multiply meters per second by 3.6 to get kilometers per hour.
Is a kilometers per hour bigger than a meters per second?
No — 1 km/h is the smaller unit, equal to 0.277778 m/s (it takes 3.6 km/h to make one m/s).
Are these speed conversions exact?
They use the standard internationally-defined conversion factors. Results are rounded to six significant figures for readability, which is accurate enough for everyday and most technical use.