Formula
km/h = m/s × 3.6 m/s = km/h × 0.277778
Worked example: 10 m/s × 3.6 = 36 km/h.
Conversion table: m/s to km/h
| m/s | km/h | mph | kn |
|---|---|---|---|
| 1 | 3.6 | 2.23694 | 1.94384 |
| 2 | 7.2 | 4.47387 | 3.88769 |
| 5 | 18 | 11.1847 | 9.71922 |
| 10 | 36 | 22.3694 | 19.4384 |
| 15 | 54 | 33.554 | 29.1577 |
| 20 | 72 | 44.7387 | 38.8769 |
| 25 | 90 | 55.9234 | 48.5961 |
| 30 | 108 | 67.1081 | 58.3153 |
| 40 | 144 | 89.4775 | 77.7538 |
| 50 | 180 | 111.847 | 97.1922 |
| 100 | 360 | 223.694 | 194.384 |
| 343 | 1234.8 | 767.269 | 666.739 |
Conversion table: km/h to m/s
| km/h | m/s |
|---|---|
| 1 | 0.277778 |
| 2 | 0.555556 |
| 5 | 1.38889 |
| 10 | 2.77778 |
| 15 | 4.16667 |
| 20 | 5.55556 |
| 25 | 6.94444 |
| 30 | 8.33333 |
| 40 | 11.1111 |
| 50 | 13.8889 |
| 100 | 27.7778 |
| 343 | 95.2778 |
FAQ
How do I convert m/s to km/h?
Multiply by 3.6. To go back, multiply by 0.277778.
How do I convert km/h to m/s?
Divide by 3.6. 90 km/h is 25 m/s.
What is the speed of sound in km/h?
About 343 m/s in air at 20 °C, which is 1 235 km/h.
Where can I convert other speed units?
The speed unit converter converts between every unit of speed on the site.