Meters Per Second to Kilometers Per Hour
One meter per second equals 3.6 kilometers per hour.
Kilometers Per Hour = meters per second × 3.6
Speed Conversion
Common Speeds
Speed Reference Guide
Common Speed Units
Meters per Second (m/s): SI base unit for speed
Kilometers per Hour (km/h): Common metric unit
Miles per Hour (mph): Imperial unit used in US/UK
Feet per Second (ft/s): Imperial unit for technical use
Knots: Nautical speed (1 knot = 1 nautical mile/hour)
Mach: Speed relative to sound (343 m/s at sea level)
Speed Comparisons
Human walking: ~5 km/h (3.1 mph)
Bicycle: ~20 km/h (12.4 mph)
Car (city): ~50 km/h (31 mph)
Car (highway): ~120 km/h (75 mph)
Commercial jet: ~900 km/h (560 mph)
Sound: 1,235 km/h (767 mph)
Meters Per Second to Kilometers Per Hour Conversion Table
| m/s | km/h |
|---|---|
| 1 | 3.6 |
| 2 | 7.2 |
| 3 | 10.8 |
| 5 | 18 |
| 8 | 28.8 |
| 10 | 36 |
| 12 | 43.2 |
| 15 | 54 |
| 20 | 72 |
| 25 | 90 |
| 30 | 108 |
| 40 | 144 |
| 50 | 180 |
| 80 | 288 |
| 100 | 360 |
About This Conversion
Meters per second to kilometers per hour is the conversion between the SI unit used in physics and the unit used on the road. Multiplying by 3.6 is exact, since there are 3,600 seconds in an hour and 1,000 meters in a kilometer.
Wind speed is where this matters outside a physics class. Meteorological reports give wind in m/s in much of Europe and in km/h elsewhere, so a 25 m/s gust in a forecast is 90 km/h, comfortably a storm rather than a breeze.
Frequently Asked Questions
What is 1 m/s in km/h?
Exactly 3.6 km/h.
What is 10 m/s in km/h?
10 m/s is 36 km/h.
How fast is 25 m/s?
25 m/s is 90 km/h or 55.9 mph, a storm-force wind.
Why is the factor exactly 3.6?
One hour is 3,600 seconds and one kilometer is 1,000 meters, so the ratio is 3600/1000.
Worth Knowing
Nautical Mile vs Mile
A nautical mile is 1,852 metres, about 15 percent longer than the statute mile of 1,609.344 metres, and equals one minute of latitude.