Kilometers Per Hour to Meters Per Second
1 kilometer / hour = 0.277778 meters per second (m/s)
Convert kilometers per hour to meters per second instantly. 1 kilometer / hour = 0.277778 meters per second. Free, accurate, with conversion table and formula.
Kilometer / Hour (km/h)
Meter / Second (m/s)
| Unit | 1 km/h equals |
|---|---|
| Meter / Second (m/s) | 0.277778 |
| Kilometer / Hour (km/h) | 1 |
| Mile / Hour (mph) | 0.621371 |
| Foot / Second (ft/s) | 0.911344 |
| Knot (kn) | 0.539957 |
| Mach (Ma) | 0.000809848 |
How to convert kilometers per hour to meters per second
- 1Take your value in kilometers per hour (km/h).
- 2Multiply by 0.277778.
- 3The result is your value in meters per second (m/s).
Kilometers Per Hour to Meters Per Second conversion table
| Kilometers Per Hour (km/h) | Meters Per Second (m/s) |
|---|---|
| 1 | 0.277778 |
| 2 | 0.555556 |
| 5 | 1.38889 |
| 10 | 2.77778 |
| 25 | 6.94444 |
| 50 | 13.8889 |
| 100 | 27.7778 |
| 250 | 69.4444 |
| 500 | 138.889 |
| 1,000 | 277.778 |
Frequently asked
How many meters per second are in a kilometer / hour?
1 kilometer / hour equals 0.277778 meters per second (m/s).
How do I convert kilometers per hour to meters per second?
Multiply the number of kilometers per hour by 0.277778 to get meters per second.
What is 10 kilometers per hour in meters per second?
10 km/h equals 2.778 m/s.
What is 100 kilometers per hour in meters per second?
100 km/h equals 27.78 m/s.
How do I convert meters per second back to kilometers per hour?
Multiply meters per second by 3.6 (the reciprocal) or use the swap button above.
Where you'll actually use this
Speed measures distance covered per unit of time. Common units include km/h, mph, m/s, knots, and the speed of light (c).
- Driving
Speed limits use km/h in most countries; mph in the US, UK, and a few others.
- Aviation & maritime
Planes and ships report speed in knots (nautical miles per hour) — 1 kn ≈ 1.852 km/h.
- Running & cycling
Pace apps switch between min/km and min/mi; speed in km/h vs mph depending on locale.
Common mistakes to avoid
- kph isn't a real unit
The correct abbreviation is km/h. 'kph' is informal and not used in technical writing.
- Knots already includes 'per hour'
Saying 'knots per hour' is redundant — it's just 'knots'.
Did you know?
Mach 1 isn't a fixed speed — it depends on temperature. At sea level it's roughly 1,225 km/h, falling to ~1,062 km/h at altitude.
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