km/h to m/s – convert kilometres per hour to metres per second
Convert km/h to m/s (kilometres per hour to metres per second) for physics, running paces, cycling speeds and engineering calculations. This page opens the main speed converter with km/h → m/s pre-selected.
Open the interactive km/h → m/s converter:
Use main converter (km/h → m/s) or switch to m/s → km/hAll speeds on the homepage share the same engine. Use the Tool Hub for stopwatches and timers while you test or train.
Quick reference: km/h to m/s
There are 3,600 seconds in an hour and 1,000 metres in a kilometre,
so:
m/s = km/h ÷ 3.6.
| km/h | m/s (approx.) |
|---|---|
| 5 km/h | 1.39 m/s |
| 10 km/h | 2.78 m/s |
| 15 km/h | 4.17 m/s |
| 20 km/h | 5.56 m/s |
| 30 km/h | 8.33 m/s |
| 50 km/h | 13.89 m/s |
How to convert km/h to m/s
Just divide by 3.6:
m/s = km/h ÷ 3.6
Examples:
- 36 km/h ÷ 3.6 = 10 m/s
- 18 km/h ÷ 3.6 = 5 m/s
- 72 km/h ÷ 3.6 = 20 m/s
Where km/h → m/s is used
- Physics problems involving kinetic energy, momentum or braking distance.
- Engineering calculations where SI units are required.
- Converting treadmill or cycling speeds into m/s for pace and stride analysis.
- Turning road speeds into distances covered per second.
More speed converters on this site
Internally, metres per second is the base speed unit, making km/h and mph conversions simple and consistent.