Meters Per Second to Kilometers Per Hour
Convert meters per second to kilometers per hour instantly — one meter per second is 3.6 kilometers per hour.
| Meters Per Second | Kilometers Per Hour |
|---|---|
| 1 m/s | 3.6 km/h |
| 2 m/s | 7.2 km/h |
| 3 m/s | 10.8 km/h |
| 5 m/s | 18 km/h |
| 10 m/s | 36 km/h |
| 25 m/s | 90 km/h |
| 50 m/s | 180 km/h |
| 100 m/s | 360 km/h |
How to use
- Enter a value in the Meters Per Second field.
- The Kilometers Per Hour figure appears immediately — no button to press.
- Typing in the Kilometers Per Hour field converts back to Meters Per Second the same way.
- Use the reference table for the values that come up most often.
Meters Per Second to Kilometers Per Hour formula
To convert meters per second to kilometers per hour, multiply by 3.6.
km/h = m/s × 3.6
Put another way, one meter per second is exactly 18/5 kilometers per hour.
Why this factor: the meter per second and the kilometer per hour are both defined against the meter per second, so dividing one definition by the other gives 3.6 directly. Both definitions are set out in full below.
To go the other way, divide by 3.6 — or use the Kilometers Per Hour to Meters Per Second converter, which is the same calculation reversed.
Worked example
Start with 60 m/s. Multiply by 3.6 to get 216 km/h.
60 m/s × 3.6 = 216 km/h
The converter above does this for any value you type, in either direction.
What is a meter per second?
Meters per second is the SI unit of speed, and the one physics equations expect.
Definition: Derived directly from the meter and the second.
Where it is used: Physics and engineering calculations, wind speed in meteorology, and sound and projectile velocities.
What is a kilometer per hour?
Kilometers per hour is the everyday speed unit for road traffic in most of the world.
Definition: Exactly 1,000 meters per 3,600 seconds, so 1 km/h is exactly 1/3.6 m/s.
Where it is used: Speed limits, vehicle speedometers, and weather wind speeds outside the US and UK.
Worth knowing: A handy shortcut: divide km/h by 3.6 for m/s, or multiply m/s by 3.6 to go the other way.
Meters Per Second vs Kilometers Per Hour
The meter per second is an SI unit while the kilometer per hour is a metric unit. That is why the factor between them is not a round number: the two systems were defined independently and only later tied together by exact agreement.
Frequently asked questions
How many kilometers per hour are in a meter per second?
One meter per second equals 3.6 kilometers per hour.
What is the formula to convert meters per second to kilometers per hour?
Multiply the number of meters per second by 3.6. To reverse it, divide by 3.6 instead.
How do I convert kilometers per hour back to meters per second?
Divide by 3.6, which is the same as multiplying by 0.277777778.
How many kilometers per hour are in 10 meters per second?
10 m/s works out to 36 km/h.
Is there anything to watch out for with kilometers per hour?
A handy shortcut: divide km/h by 3.6 for m/s, or multiply m/s by 3.6 to go the other way.
How is the meter per second defined?
Derived directly from the meter and the second.