Speed Calculator
Convert between kilometers per hour (km/h) and meters per second (m/s)
km/h
Conversion Formulas
km/h to m/s
Multiply by 5/18 or 0.27778
m/s = km/h × (5/18)
Example: 72 km/h = 72 × 5/18 = 20 m/s
m/s to km/h
Multiply by 18/5 or 3.6
km/h = m/s × (18/5)
Example: 25 m/s = 25 × 18/5 = 90 km/h
Common Conversions
| km/h | ↔ | m/s |
|---|---|---|
| 10 km/h | = | 2.78 m/s |
| 36 km/h | = | 10 m/s |
| 50 km/h | = | 13.89 m/s |
| 72 km/h | = | 20 m/s |
| 90 km/h | = | 25 m/s |
| 100 km/h | = | 27.78 m/s |
| 120 km/h | = | 33.33 m/s |