↗ Speed Instant conversion
Edit either value. Use a decimal point; commas group thousands. Rounding affects display only.
How to convert meters per second to kilometers per hour
Translate scientific speed measurements to road-speed units.
km/h = m/s × 3.6
Formula coefficients shown rounded. Calculations use the stored factors before display rounding.
A worked example
For 10 m/s, the result is approximately 36 km/h. To go the other way, edit the result above or swap the units.
Know your units
Speed measures distance per time. Knots are nautical miles per hour.
Where the numbers come from
Factors follow NIST conversion references and documented unit definitions. Read our accuracy and rounding notes.
The table and method describe this page’s original pair. Changing units above does not change this reference section.
| Meters per second (m/s) | Kilometers per hour (km/h) |
|---|---|
| 1 | 3.6 |
| 2 | 7.2 |
| 5 | 18 |
| 10 | 36 |
| 20 | 72 |
| 25 | 90 |
| 50 | 180 |
| 100 | 360 |
| 500 | 1800 |
| 1000 | 3600 |