Metres per second (m/s) to Kilometres per hour (km/h)
To convert metres per second to kilometres per hour, multiply by 3.6. Metres per second (m/s) is the SI unit for speed, used in science, meteorology, and engineering, while km/h is more intuitive for everyday travel and sport.
Frequently asked questions
Ten m/s multiplied by 3.6 equals 36 km/h. A sprinting athlete reaches roughly 10–12 m/s (36–43 km/h). Usain Bolt's recorded top speed during his 100 m world record was approximately 12.4 m/s (44.7 km/h).
Thirty m/s equals 30 × 3.6 = 108 km/h. In meteorological terms, a sustained wind of 30 m/s represents a violent storm (Beaufort force 11). Such conditions cause widespread structural damage and are rarely encountered inland.
One metre per second equals 3.6 km/h — roughly the pace of a brisk walk. The average human walking speed is approximately 1.4 m/s (5 km/h), and a comfortable jogging pace is around 2.8 m/s (10 km/h).
Metres per second is the SI (International System of Units) base unit for speed, derived from the metre and the second. Using m/s keeps calculations consistent across physics and engineering formulae. Converting to km/h is useful for communication, but scientific work stays in m/s to avoid unit errors.