Kilometres per hour to Metres per second
Type a value in Kilometres per hour and get the result in Metres per second, calculated exactly.
100 Kilometres per hour ≈ 27.77777778 Metres per second
Precision
Exact factorRounded for display to about 10 significant digits.
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Formula
m/s = km/h ÷ 3.6
To convert Kilometres per hour to Metres per second, divide the value by 3.6.
Worked examples
- 1 km/h ÷ 3.6 ≈ 0.2777777778 m/s
- 100 km/h ÷ 3.6 ≈ 27.77777778 m/s
- 50 km/h ÷ 3.6 ≈ 13.88888889 m/s
This factor is exact by definition.
Conversion table
| Kilometres per hour (km/h) | Metres per second (m/s) |
|---|---|
| 1 | ≈ 0.2777778 |
| 2 | ≈ 0.5555556 |
| 3 | ≈ 0.8333333 |
| 4 | ≈ 1.111111 |
| 5 | ≈ 1.388889 |
| 6 | ≈ 1.666667 |
| 7 | ≈ 1.944444 |
| 8 | ≈ 2.222222 |
| 9 | 2.5 |
| 10 | ≈ 2.777778 |
| 15 | ≈ 4.166667 |
| 20 | ≈ 5.555556 |
| 25 | ≈ 6.944444 |
| 30 | ≈ 8.333333 |
| 40 | ≈ 11.11111 |
| 50 | ≈ 13.88889 |
| 60 | ≈ 16.66667 |
| 70 | ≈ 19.44444 |
| 75 | ≈ 20.83333 |
| 80 | ≈ 22.22222 |
| 90 | 25 |
| 100 | ≈ 27.77778 |
Values marked ≈ are rounded; the rest are exact.
Reverse table: Metres per second to Kilometres per hour
| Metres per second (m/s) | Kilometres per hour (km/h) |
|---|---|
| 1 | 3.6 |
| 2 | 7.2 |
| 3 | 10.8 |
| 4 | 14.4 |
| 5 | 18 |
| 6 | 21.6 |
| 7 | 25.2 |
| 8 | 28.8 |
| 9 | 32.4 |
| 10 | 36 |
| 15 | 54 |
| 20 | 72 |
| 25 | 90 |
| 30 | 108 |
| 40 | 144 |
| 50 | 180 |
| 60 | 216 |
| 70 | 252 |
| 75 | 270 |
| 80 | 288 |
| 90 | 324 |
| 100 | 360 |
Unit definitions
- Kilometres per hour km/h
- 1000 metres in 3600 seconds: exactly 5/18 of a metre per second.
- Metres per second m/s
- The SI unit of speed.
Questions people ask
Kilometres per hour to Metres per second: what is the conversion factor?
One km/h is ≈ 0.2777777778 m/s.
How do I convert Kilometres per hour to Metres per second?
Use the formula above. For example, 100 km/h = ≈ 27.77777778 m/s.
Is the conversion exact?
Yes. Both units have exact definitions, so the factor is exact; a result is only rounded when its decimals never end.
Factors checked 19 October 2026.