1 km/h = 0.00027777777777778 km/s
1 Kilometer per hour (km/h) = 0.00027777777777778 Kilometer per second (km/s).
If you want to reverse convert, use Kilometer per second → Kilometer per hour. 1 km/s = 3600 km/h. You can also explore the full Speed converter page for more cross conversions.
Conversion formula
Kilometer per hour to Kilometer per second formula: value in km/s = value in km/h × 0.00027777777777778.
Kilometer per second to Kilometer per hour formula: value in km/h = value in km/s × 3600.
How to convert Kilometer per hour to Kilometer per second
To convert Kilometer per hour to Kilometer per second, multiply the value in km/h by 0.00027777777777778. This gives the result in km/s.
For example, 1 km/h = 0.00027777777777778 km/s and 10 km/h = 0.0027777777777778 km/s.
What is Kilometer per hour?
Kilometer per hour (km/h): Road and vehicle speed expressed as distance per hour. 3.6 km/h = 1 m/s.
What is Kilometer per second?
Kilometer per second (km/s): A scale suited to orbital and other very high speeds. 1 km/s = 1 000 m/s.
FAQ
How many kilometer per second are in 1 kilometer per hour?
There are 0.00027777777777778 km/s in 1 km/h.
Why can conversion results differ slightly?
Check the unit definition and rounding. US and imperial measures can differ; rounding intermediate values can also change the final digits.
How do I convert kilometer per hour to kilometer per second?
Multiply the value in km/h by 0.00027777777777778 to get the value in km/s.
Kilometer per hour → other Speed units
- 1 kilometer per hour → meter per second = 0.27777777777778 meter per second
- 1 kilometer per hour → kilometer per second = 0.00027777777777778 kilometer per second
- 1 kilometer per hour → miles per hour = 0.62137119223733 miles per hour
- 1 kilometer per hour → knot = 0.53995680346039 knot
- 1 kilometer per hour = 9.2656693110598E-10 speed of light
- 1 kilometer per hour → mach = 0.00081627322297319 mach
- 1 kilometer per hour → feet per second = 0.91134441528142 feet per second
- 1 kilometer per hour → foot per minute = 54.680664916885 foot per minute
Kilometer per hour → Kilometer per second Table
The table below shows common values from Kilometer per hour to Kilometer per second and the reverse direction for quick reference.
| km/h | km/s | Rounded |
|---|---|---|
| 1 km/h | 0.00027777777777778 km/s | 0.0003 |
| 2 km/h | 0.00055555555555556 km/s | 0.0006 |
| 3 km/h | 0.00083333333333333 km/s | 0.0008 |
| 4 km/h | 0.0011111111111111 km/s | 0.0011 |
| 5 km/h | 0.0013888888888889 km/s | 0.0014 |
| 10 km/h | 0.0027777777777778 km/s | 0.0028 |
| 12 km/h | 0.0033333333333333 km/s | 0.0033 |
| 15 km/h | 0.0041666666666667 km/s | 0.0042 |
| 20 km/h | 0.0055555555555556 km/s | 0.0056 |
| 25 km/h | 0.0069444444444444 km/s | 0.0069 |
| 30 km/h | 0.0083333333333333 km/s | 0.0083 |
| 40 km/h | 0.011111111111111 km/s | 0.0111 |
| 50 km/h | 0.013888888888889 km/s | 0.0139 |
| 75 km/h | 0.020833333333333 km/s | 0.0208 |
| 100 km/h | 0.027777777777778 km/s | 0.0278 |
| 200 km/h | 0.055555555555556 km/s | 0.0556 |
| 250 km/h | 0.069444444444444 km/s | 0.0694 |
| 500 km/h | 0.13888888888889 km/s | 0.1389 |
| 750 km/h | 0.20833333333333 km/s | 0.2083 |
| 1000 km/h | 0.27777777777778 km/s | 0.2778 |
| 2500 km/h | 0.69444444444444 km/s | 0.6944 |
| 5000 km/h | 1.3888888888889 km/s | 1.3889 |
| 10000 km/h | 2.7777777777778 km/s | 2.7778 |
Kilometer per second → Kilometer per hour Table
| km/s | km/h | Rounded |
|---|---|---|
| 1 km/s | 3600 km/h | 3600.0000 |
| 2 km/s | 7200 km/h | 7200.0000 |
| 3 km/s | 10800 km/h | 10800.0000 |
| 4 km/s | 14400 km/h | 14400.0000 |
| 5 km/s | 18000 km/h | 18000.0000 |
| 10 km/s | 36000 km/h | 36000.0000 |
| 12 km/s | 43200 km/h | 43200.0000 |
| 15 km/s | 54000 km/h | 54000.0000 |
| 20 km/s | 72000 km/h | 72000.0000 |
| 25 km/s | 90000 km/h | 90000.0000 |
| 30 km/s | 108000 km/h | 108000.0000 |
| 40 km/s | 144000 km/h | 144000.0000 |
| 50 km/s | 180000 km/h | 180000.0000 |
| 75 km/s | 270000 km/h | 270000.0000 |
| 100 km/s | 360000 km/h | 360000.0000 |
| 200 km/s | 720000 km/h | 720000.0000 |
| 250 km/s | 900000 km/h | 900000.0000 |
| 500 km/s | 1800000 km/h | 1800000.0000 |
| 750 km/s | 2700000 km/h | 2700000.0000 |
| 1000 km/s | 3600000 km/h | 3600000.0000 |
| 2500 km/s | 9000000 km/h | 9000000.0000 |
| 5000 km/s | 18000000 km/h | 18000000.0000 |
| 10000 km/s | 36000000 km/h | 36000000.0000 |
Kilometer per second → Kilometer per hour
The reverse value is 1 km/s = 3600 km/h.