Convert kilometer/hour to kilometer/second
Please provide values below to convert kilometer/hour [km/h] to kilometer/second [km/s], or Convert kilometer/second to kilometer/hour.
1 km/h = 0.0002777777778 km/s. To convert kilometer/hour to kilometer/second, multiply the value by 0.0002777777778; to go the other way, divide by it (1 km/s = 3599.99999971 km/h). Both units measure speed and appear in everyday as well as technical calculations, so switching between them quickly is often useful.
Quick Reference
- 1 km/h = 0.0002777777778 km/s
- 1 km/s = 3599.99999971 km/h
- 10 km/h = 0.002777777778 km/s
- 100 km/h = 0.02777777778 km/s
How to Convert Kilometer/hour to Kilometer/second
1 km/h = 0.0002777777778 km/s
Example: convert 15 km/h to km/s:
15 km/h = 15 × 0.0002777777778 km/s = 0.004166666667 km/s
Kilometer/hour to Kilometer/second Conversion Table
| kilometer/hour | kilometer/second |
|---|---|
| 1 km/h | 0.0002777777778 km/s |
| 2 km/h | 0.0005555555556 km/s |
| 3 km/h | 0.0008333333334 km/s |
| 5 km/h | 0.001388888889 km/s |
| 10 km/h | 0.002777777778 km/s |
| 20 km/h | 0.005555555556 km/s |
| 50 km/h | 0.01388888889 km/s |
| 100 km/h | 0.02777777778 km/s |
| 500 km/h | 0.1388888889 km/s |
| 1000 km/h | 0.2777777778 km/s |
Kilometer/hour
Kilometer per hour (km/h) is a unit of speed expressing the number of kilometers traveled in one hour.
History/Origin
The km/h unit originated from the metric system, developed in France during the late 18th century, and became widely adopted for measuring speed in transportation and scientific contexts.
Current Use
Km/h is commonly used worldwide to specify vehicle speeds, speed limits, and other applications involving the measurement of speed in everyday life and transportation systems.
Kilometer/second
A kilometer per second (km/s) is a unit of speed representing the distance of one kilometer traveled in one second.
History/Origin
The kilometer per second has been used in scientific contexts, particularly in astronomy and physics, to measure high velocities such as the speed of celestial objects and spacecraft. Its usage became prominent with the development of precise measurement techniques in the 20th century.
Current Use
Today, km/s is primarily used in astronomy, astrophysics, and space science to describe the velocities of stars, galaxies, and spacecraft. It is also used in scientific research involving high-speed phenomena.
Frequently Asked Questions
What is 1 kilometer/hour in kilometer/second?
1 kilometer/hour (km/h) = 0.0002777777778 kilometer/second (km/s).
How do you convert kilometer/hour to kilometer/second?
Multiply the kilometer/hour value by 0.0002777777778. For example, 25 km/h × 0.0002777777778 = 0.006944444445 km/s.
What is 10 kilometer/hour in kilometer/second?
10 km/h = 0.002777777778 km/s.
Which unit is larger, the kilometer/hour or the kilometer/second?
The kilometer/second is the larger unit: 1 km/h equals only 0.0002777777778 km/s.