Kilometers per Hour to Meters per Second (km/h to m/s)
1 kilometer per hour (km/h) = 0.2777777778 meters per second (m/s). 1 m/s = 3.6 km/h. Example: 36 km/h = 36 × 0.2777777778 = 10 m/s.
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1 km/h = 0.2777777778 m/s
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk kilometer per hour to meter per second converter to paste a column from Excel.
How to Convert Kilometer per Hour to Meter per Second (Speed)
- 1 km/h = 0.2777777778 m/s
- 1 m/s = 3.6 km/h
- Example: convert 36 km/h to m/s: 36 km/h = 36 × 0.2777777778 m/s = 10 m/s
Formula
m/s = km/h × 0.2777777777778
or m/s = km/h ÷ 3.6
Derivation from SI units:
- 1 km/h = 1000 m ÷ 3600 s = 1/3.6 m/s exactly.
- The SI unit of speed: one metre travelled per second.
Both units are defined exactly, so the factor is exact. Kilometer per Hour definition: kilometer per hour; Meter per Second (Speed) definition: meter per second.
Worked examples
- A speed of 36 km/h is 10 m/s.
36 km/h × 0.2777777778 = 10 m/s - A car at 90 km/h travels 25 m/s.
90 km/h × 0.2777777778 = 25 m/s
Kilometer per Hour to Meter per Second (Speed) conversion table
| Kilometers per Hour (km/h) | Meters per Second (m/s) |
|---|---|
| 10 km/h | 2.777777778 m/s |
| 30 km/h | 8.333333333 m/s |
| 40 km/h | 11.11111111 m/s |
| 50 km/h | 13.88888889 m/s |
| 60 km/h | 16.66666667 m/s |
| 80 km/h | 22.22222222 m/s |
| 90 km/h | 25 m/s |
| 100 km/h | 27.77777778 m/s |
| 110 km/h | 30.55555556 m/s |
| 120 km/h | 33.33333333 m/s |
| 130 km/h | 36.11111111 m/s |
Where it's used
Speeds in km/h are converted to metres per second for physics calculations such as kinetic energy, stopping distance and momentum. Divide by 3.6.
Kilometer per Hour to other speed units
| Conversion | 1 km/h equals |
|---|---|
| kilometer per hour to meter per second | 0.2777777778 m/s |
| kilometer per hour to mile per hour | 0.6213711922 mph |
| kilometer per hour to foot per second | 0.9113444153 ft/s |
| kilometer per hour to knot | 0.5399568035 kn |
Frequently asked questions
How do I convert km/h to m/s?
Divide by 3.6: 90 km/h = 25 m/s.
How many meters per second are in 1 kilometer per hour?
1 km/h = 0.2777777778 m/s.
How do I convert kilometers per hour to meters per second?
Multiply the value in km/h by 0.2777777778, or divide it by 3.6. For example, 36 km/h × 0.2777777778 = 10 m/s.
Is the km/h to m/s conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
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). Kilometers per Hour to Meters per Second (km/h to m/s). Retrieved October 25, 2026, from https://scientificconverters.com/speed/kilometers-per-hour-to-meters-per-second/
IEEE
Scientific Converters, "Kilometers per Hour to Meters per Second (km/h to m/s)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/speed/kilometers-per-hour-to-meters-per-second/