Convert Kilometres per hour to Metres per second
1 kilometre per hour is 0.277778 m/s. One kilometre per hour is exactly 0.277777777778 metres per second.
One kilometre per hour is 0.27777778 metres per second. To convert kilometres per hour to metres per second, multiply by 0.27777778; to go the other way, divide by 0.27777778 or multiply by 3.6. The factor is exact rather than rounded: it follows from NIST Special Publication 811. Exactly one kilometre divided by 3,600 seconds.
Factor checked against the defining standard · How we check
- Kilometres per hour × 0.27777778
value * 0.2777777777780.278 m/s
1 kilometre per hour in every speed unit
| Unit | Value | Exact factor |
|---|---|---|
| metres per second | 0.2777777778 m/s | × 0.277777777778 |
| kilometres per hour (as entered) | 1 km/h | — |
| miles per hour | 0.6213711922 mph | × 0.621371192237 |
| knots | 0.5399568035 kn | × 0.539956803456 |
| feet per second | 0.9113444153 ft/s | × 0.911344415281 |
Factors are entered by hand from NIST Special Publication 811 rather than derived from a units library, so the ones that terminate are exact rather than rounded.
How do you convert kilometres per hour to metres per second?
- 1.Take the measurement in kilometres per hour.
- 2.Multiply by 0.27777778 — that is how many metres per second fit in one kilometre per hour.
- 3.To go back the other way, divide by 0.27777778, or multiply by 3.6.
Kilometres per hour to metres per second conversion table
| Kilometres per hour | Metres per second |
|---|---|
| 1 km/h | 0.277778 m/s |
| 2 km/h | 0.555556 m/s |
| 3 km/h | 0.833333 m/s |
| 4 km/h | 1.111111 m/s |
| 5 km/h | 1.388889 m/s |
| 6 km/h | 1.666667 m/s |
| 7 km/h | 1.944444 m/s |
| 8 km/h | 2.222222 m/s |
| 9 km/h | 2.5 m/s |
| 10 km/h | 2.777778 m/s |
| 12 km/h | 3.333333 m/s |
| 15 km/h | 4.166667 m/s |
| 20 km/h | 5.555556 m/s |
| 25 km/h | 6.944444 m/s |
| 50 km/h | 13.888889 m/s |
| 100 km/h | 27.777778 m/s |
What are kilometres per hour and metres per second?
- Kilometre per hour (km/h)
- Exactly one kilometre divided by 3,600 seconds. The road speed unit almost everywhere outside the United States and the United Kingdom.
- Metre per second (m/s)
- The SI unit of speed, and the one physics is done in. A brisk walk is about 1.4 m/s.
Source: NIST Special Publication 811 — conversion factors for speed
Questions people actually ask
- How many metres per second are in a kilometre per hour?
- 0.27777778. The SI unit of speed, and the one physics is done in. A brisk walk is about 1.4 m/s.
- How do I convert metres per second back to kilometres per hour?
- Divide by 0.27777778, or multiply by 3.6 — they are the same operation.
Other speed conversions
Metres per second to kilometres per hour — the same conversion the other way.