Convert Meters per second to Kilometers per hour
One meter per second equals 3.6 kilometers per hour. Type any value to convert meters per second to kilometers per hour instantly — with a full reference table below.
Convert Meters per second to Kilometers per hour
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How to convert Meters per second to Kilometers per hour
To convert meters per second to kilometers per hour, multiply by 3.6. One meter per second equals 3.6 km/h, and one kilometer per hour equals 0.277778 m/s.
- Take the value in meters per second — for example 7.5 m/s.
- Multiply by 3.6 (the number of kilometers per hour in one meter per second).
- 7.5 × 3.6 = 27 km/h.
Quick mental estimate: Multiply the number of meters per second by 3.6 — that is exact.
Meters per second to Kilometers per hour conversion table
| Meters per second | Kilometers per hour |
|---|---|
| 1 m/s | 3.6 km/h |
| 5 m/s | 18 km/h |
| 10 m/s | 36 km/h |
| 20 m/s | 72 km/h |
| 25 m/s | 90 km/h |
| 30 m/s | 108 km/h |
| 40 m/s | 144 km/h |
| 50 m/s | 180 km/h |
| 60 m/s | 216 km/h |
| 70 m/s | 252 km/h |
| 80 m/s | 288 km/h |
| 100 m/s | 360 km/h |
| 120 m/s | 432 km/h |
| Kilometers per hour | Meters per second |
|---|---|
| 1 km/h | 0.277778 m/s |
| 5 km/h | 1.388889 m/s |
| 10 km/h | 2.777778 m/s |
| 20 km/h | 5.555556 m/s |
| 25 km/h | 6.944444 m/s |
| 30 km/h | 8.333333 m/s |
| 40 km/h | 11.11111 m/s |
| 50 km/h | 13.88889 m/s |
| 60 km/h | 16.66667 m/s |
| 70 km/h | 19.44444 m/s |
| 80 km/h | 22.22222 m/s |
| 100 km/h | 27.77778 m/s |
| 120 km/h | 33.33333 m/s |
About converting Meters per second to Kilometers per hour
Meters per second (m/s) and Kilometers per hour (km/h) are both units of speed. The exact factor is 1 m/s = 3.6 km/h, so multiply by 3.6 to go from meters per second to kilometers per hour (or divide to go back).
The conversion runs entirely in your browser. Need the reverse? Use the Kilometers per hour to Meters per second converter, or the full unit converter for every unit at once.
Real-world speed in meters per second and kilometers per hour
| Example | Meters per second | Kilometers per hour |
|---|---|---|
| A walking pace | ≈ 1.4 m/s | ≈ 5.04 km/h |
| Usain Bolt's top speed (2009) | ≈ 12.42 m/s | ≈ 44.712 km/h |
| The UK motorway limit (70 mph) | 31.2928 m/s | 112.6541 km/h |
| The German Autobahn advisory speed (130 km/h) | 36.1111 m/s | 130 km/h |
| The speed of sound (air, 20 °C) | ≈ 343 m/s | ≈ 1,234.8 km/h |
| An airliner at cruise | ≈ 250 m/s | ≈ 900 km/h |
“≈” marks typical values; the rest are defined or measured figures.
The units
The SI unit of speed: one metre per second.
Used for: Science, wind speed and sport.
Kilometres per hour — exactly 1/3.6 m/s.
Used for: Road speeds in most countries.
km/h, mph, ft/s and knots are all defined exactly in metres per second (a knot is one nautical mile, exactly 1,852 m, per hour).