Mathematics · Grades 6–9
Convert speed units
One kilometre is 1000 metres; one hour is 3600 seconds.
The key idea
One kilometre is 1000 metres; one hour is 3600 seconds.
1 m/s = 3.6 km/h
Worked examples
Convert 19 m/s to km/h.
19 × 3.6 = 68.4
68.4 km/h
Convert 13 m/s to km/h.
13 × 3.6 = 46.8
46.8 km/h
Try it yourself
Convert 33 m/s to km/h.
Convert 35 m/s to km/h.
Check your understanding
Answers and marking notes
- 118.8 km/h
33 × 3.6 = 118.8
- 126 km/h
35 × 3.6 = 126
Further reading and review references
These are reference links, not copied exercises, institutional endorsement or proof of independent review.
Learning preview · teacher review required. Grade bands are approximate, not official curriculum alignment.