Tools · m/s to KPH
Meters per Second to KPH
Enter any value in meters per second, see the equivalent in kilometers per hour. The factor is exactly 3.6, because one hour is exactly 3,600 seconds and one kilometer is exactly 1,000 meters.
1 m/s = 3.6 kph (exact: 3,600 s/h ÷ 1,000 m/km)
The cleanest conversion in physics
Multiply m/s by 3.6 to get kph. Divide kph by 3.6 to get m/s. That is the entire formula. It is exact because both kilometers and seconds are defined by international agreement, with no fudge factors and no rounding. This is the conversion that shows up in every physics homework set the moment problems move from "in a vacuum" to "on a real road."
For reference: 1 m/s is a slow walk, 3 m/s is a brisk jog, 10 m/s is a fast cyclist, 30 m/s is highway driving, 100 m/s is a Formula 1 car at top speed. The speed of sound at sea level is 343 m/s, which is 1,234.8 kph — the threshold every supersonic aircraft must cross to break the sound barrier.
m/s to KPH reference
| m/s | KPH |
|---|---|
| 1 | 3.60 |
| 2 | 7.20 |
| 3 | 10.80 |
| 4 | 14.40 |
| 5 | 18.00 |
| 6 | 21.60 |
| 7 | 25.20 |
| 8 | 28.80 |
| 9 | 32.40 |
| 10 | 36.00 |
| 15 | 54.00 |
| 20 | 72.00 |
| 25 | 90.00 |
| 30 | 108.00 |
| 40 | 144.00 |
| 50 | 180.00 |
| 60 | 216.00 |
| 80 | 288.00 |
| 100 | 360.00 |
Related converters
- m/s to MPH — for miles per hour instead of kilometers.
- KPH to MPH — the standard road-speed converter.
- Live GPS speedometer — read your real speed in the browser.