Kilometers per Hour to Meters per Second Converter (km/h to m/s)
1 kilometers per hour = 0.277778 meters per second. To go from meters per second to kilometers per hour multiply by 3.6, because there are 3,600 seconds in an hour and 1,000 m in a km.
Result
90 km/h = 25 m/s
How to convert kilometers per hour to meters per second
To go from meters per second to kilometers per hour multiply by 3.6, because there are 3,600 seconds in an hour and 1,000 m in a km. Science and sports data are given in m/s, but road signs use km/h.
Formula
m/s = km/h × 0.277778
Worked example
90 km/h × 0.277778 = 25 m/s
Kilometers per Hour to Meters per Second quick-reference table
| Kilometers per Hour (km/h) | Meters per Second (m/s) |
|---|---|
| 10 km/h | 2.77778 m/s |
| 36 km/h | 10 m/s |
| 50 km/h | 13.8889 m/s |
| 72 km/h | 20 m/s |
| 100 km/h | 27.7778 m/s |
| 120 km/h | 33.3333 m/s |
Real-life examples
A 90 km/h car is 25 m/s, and a 5 km/h walk is about 1.39 m/s.
Frequently asked questions
Why multiply by 3.6?
There are 3,600 seconds in an hour and 1,000 meters in a kilometer, so 3,600 / 1,000 = 3.6.
How do I convert km/h to m/s?
Divide by 3.6. For example 72 km/h / 3.6 = 20 m/s.
What is 1 kilometers per hour in meters per second?
1 kilometers per hour = 0.277778 meters per second (km/h to m/s).
What is the formula to convert km/h to m/s?
m/s = km/h × 0.277778. For example, 90 km/h × 0.277778 = 25 m/s.
How do I convert m/s back to km/h?
Use the reverse converter: 1 meters per second = 3.6 kilometers per hour. Check: 25 m/s converts back to 90 km/h.
Reverse conversion
Need the other direction? Meters per Second to Kilometers per Hour converter (m/s to km/h): 1 meters per second = 3.6 kilometers per hour.
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