Meters per Second to Kilometers per Hour (m/s to km/h)
1 meter per second (m/s) = 3.6 kilometers per hour (km/h). 1 km/h = 0.2777777778 m/s. Example: 10 m/s = 10 × 3.6 = 36 km/h.
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1 m/s = 3.6 km/h
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk meter per second to kilometer per hour converter to paste a column from Excel.
How to Convert Meter per Second (Speed) to Kilometer per Hour
- 1 m/s = 3.6 km/h
- 1 km/h = 0.2777777778 m/s
- Example: convert 10 m/s to km/h: 10 m/s = 10 × 3.6 km/h = 36 km/h
Formula
km/h = m/s × 3.6
Derivation from SI units:
- The SI unit of speed: one metre travelled per second.
- 1 km/h = 1000 m ÷ 3600 s = 1/3.6 m/s exactly.
Both units are defined exactly, so the factor is exact. Meter per Second (Speed) definition: meter per second; Kilometer per Hour definition: kilometer per hour.
Worked examples
- A sprint at 10 m/s is 36 km/h.
10 m/s × 3.6 = 36 km/h - A wind of 5 m/s is 18 km/h.
5 m/s × 3.6 = 18 km/h
Meter per Second (Speed) to Kilometer per Hour conversion table
| Meters per Second (m/s) | Kilometers per Hour (km/h) |
|---|---|
| 1 m/s | 3.6 km/h |
| 2 m/s | 7.2 km/h |
| 5 m/s | 18 km/h |
| 10 m/s | 36 km/h |
| 15 m/s | 54 km/h |
| 20 m/s | 72 km/h |
| 25 m/s | 90 km/h |
| 30 m/s | 108 km/h |
| 50 m/s | 180 km/h |
| 100 m/s | 360 km/h |
| 343 m/s | 1234.8 km/h |
Where it's used
Speeds in metres per second from physics problems, wind data and sports science are converted to km/h for everyday use. Multiply by 3.6.
Meter per Second (Speed) to other speed units
| Conversion | 1 m/s equals |
|---|---|
| meter per second to kilometer per hour | 3.6 km/h |
| meter per second to mile per hour | 2.236936292 mph |
| meter per second to foot per second | 3.280839895 ft/s |
| meter per second to knot | 1.943844492 kn |
Frequently asked questions
Why multiply m/s by 3.6?
An hour has 3600 seconds and a kilometre 1000 metres: 3600 ÷ 1000 = 3.6, so 10 m/s = 36 km/h.
How many kilometers per hour are in 1 meter per second?
1 m/s = 3.6 km/h.
How do I convert meters per second to kilometers per hour?
Multiply the value in m/s by 3.6. For example, 10 m/s × 3.6 = 36 km/h.
Is the m/s to km/h conversion exact?
Yes. Both units are defined exactly, and 1 m/s is exactly 3.6 km/h.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4 (radian) and Table 8 (non-SI units accepted for use with the SI).
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Meters per Second to Kilometers per Hour (m/s to km/h). Retrieved October 25, 2026, from https://scientificconverters.com/speed/meters-per-second-to-kilometers-per-hour/
IEEE
Scientific Converters, "Meters per Second to Kilometers per Hour (m/s to km/h)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/speed/meters-per-second-to-kilometers-per-hour/