How to convert metres per second to kilometres per hour
One metre per second equals 3.6 kilometres per hour, so multiply the number of metres per second by 3.6:
km/h = m/s × 3.6
m/s = km/h ÷ 3.6 (1 km/h = 0.277778 m/s)
Example: 1.4 m/s → 1.4 × 3.6 = 5.04 km/h.
Going the other way, divide by 3.6, or multiply by 0.277778; the kilometres per hour to metres per second converter does it for you.
Everyday values
| Metres per second | Kilometres per hour | For example |
|---|---|---|
| 1.4 m/s | 5.04 km/h | walking pace |
| 3 m/s | 10.8 km/h | jogging |
| 10 m/s | 36 km/h | a fresh breeze (Beaufort 5) |
| 10.44 m/s | 37.584 km/h | Usain Bolt's average over 100 m in 2009 |
| 343 m/s | 1,234.8 km/h | the speed of sound in air at 20 °C |
When you need this conversion
Metres per second is the SI unit used in physics and in many weather services for wind speed. Multiply by 3.6 to get km/h: a 10 m/s wind is 36 km/h.
Metre per second to kilometre per hour conversion table
| m/s | km/h | m/s | km/h |
|---|---|---|---|
| 1 m/s | 3.6 km/h | 16 m/s | 57.6 km/h |
| 2 m/s | 7.2 km/h | 17 m/s | 61.2 km/h |
| 3 m/s | 10.8 km/h | 18 m/s | 64.8 km/h |
| 4 m/s | 14.4 km/h | 19 m/s | 68.4 km/h |
| 5 m/s | 18 km/h | 20 m/s | 72 km/h |
| 6 m/s | 21.6 km/h | 21 m/s | 75.6 km/h |
| 7 m/s | 25.2 km/h | 22 m/s | 79.2 km/h |
| 8 m/s | 28.8 km/h | 23 m/s | 82.8 km/h |
| 9 m/s | 32.4 km/h | 24 m/s | 86.4 km/h |
| 10 m/s | 36 km/h | 25 m/s | 90 km/h |
| 11 m/s | 39.6 km/h | 26 m/s | 93.6 km/h |
| 12 m/s | 43.2 km/h | 27 m/s | 97.2 km/h |
| 13 m/s | 46.8 km/h | 28 m/s | 100.8 km/h |
| 14 m/s | 50.4 km/h | 29 m/s | 104.4 km/h |
| 15 m/s | 54 km/h | 30 m/s | 108 km/h |
About the units
- Metre per second (m/s): the SI unit of speed.
- Kilometre per hour (km/h): 1,000 metres per 3,600 seconds.
Both are units of speed. The conversion factor comes from the exact definitions above, so the calculator is exact; results are only rounded for display (up to six significant digits).
Frequently asked questions
How many kilometres per hour are in one metre per second?
One metre per second is 3.6 kilometres per hour. One kilometre per hour is 0.277778 metres per second.
How do I convert metres per second to kilometres per hour?
Multiply the value in metres per second by 3.6. To go back, divide by 3.6.
What is 1.4 m/s in kilometres per hour?
1.4 m/s = 5.04 km/h.
What is 3 m/s in kilometres per hour?
3 m/s = 10.8 km/h.
Sources
- NIST Special Publication 811 (2008), Guide for the Use of the International System of Units (SI), Appendix B: conversion factors.
- NIST Handbook 44 (2024), Appendix C: General tables of units of measurement.
Last reviewed 5 October 2026. Results are estimates; see our disclaimer.