Conversion from Speed of light to Kilometers per second (km/s) and vice versa

Updated on by Stefan Banse

Here you can convert the Speed unit Speed of light into the unit Kilometers per second and vice versa you can convert Kilometers per second into Speed of light. By clicking the "Swap units" icon, you will always obtain the desired conversion in the calculation result. With the following calculator you can also calculate any other Speed unit.

Info about "Speed of light"

Definition: If an object moves at the light speed for one second, it travels a distance of 299,792.458 km or about 300,000 km. This is the light speed that light travels in a vacuum.

This speed is also used to propagate radio signals, which is very important in space travel. For example, a signal from Mars takes about 3 to 20 minutes to reach Earth depending on its actual position. We notice a sunrise on earth about 8 minutes later because the light of the sun arrives to our eyes at that time.

Info about "Kilometers per second"

Kilometer per second is part of the metric system and it is derived from the standard unit of speed, meter per second (m/s). This is because both meters and seconds are defined as the basic units for length and time respectively.

This unit is defined as follows: An object moving at "1 km/s" per second will cover one kilometer. "km/s" is approved to use in the international system of units (SI).

Formula for the conversion of Speed of light to Kilometers per second (km/s)

The calculation from Speed of light to Kilometers per second shall be made using the following conversion formula:

 Conversion formula Speed of light to Kilometers per second 

Determine the number of Kilometers per second from Speed of light

Speed of light × 299792.45


Formula for the conversion of Kilometers per second (km/s) to Speed of light

The calculation from Kilometers per second to Speed of light shall be made using the following conversion formula:

 Conversion formula Kilometers per second to Speed of light 

Determine the number of Speed of light from Kilometers per second

Kilometers per second × 3.3356410409935E-6


Overview table: How many Speed of light are how many Kilometers per second?

Speed of light Kilometers per second km/s
0.01  => 2 997.92450 km/s
0.02  => 5 995.84900 km/s
0.03  => 8 993.77350 km/s
0.04  => 11 991.69800 km/s
0.05  => 14 989.62250 km/s
0.06  => 17 987.54700 km/s
0.07  => 20 985.47150 km/s
0.08  => 23 983.39600 km/s
0.09  => 26 981.32050 km/s
0.10  => 29 979.24500 km/s
0.20  => 59 958.49000 km/s
0.30  => 89 937.73500 km/s
0.40  => 119 916.98000 km/s
0.50  => 149 896.22500 km/s
0.60  => 179 875.47000 km/s
0.70  => 209 854.71500 km/s
0.80  => 239 833.96000 km/s
0.90  => 269 813.20500 km/s
1  => 299 792.45000 km/s
2  => 599 584.90000 km/s
3  => 899 377.35000 km/s
4  => 1 199 169.80000 km/s
5  => 1 498 962.25000 km/s
6  => 1 798 754.70000 km/s
7  => 2 098 547.15000 km/s
8  => 2 398 339.60000 km/s
9  => 2 698 132.05000 km/s
10  => 2 997 924.50000 km/s
20  => 5 995 849 km/s
30  => 8 993 773.50000 km/s
40  => 11 991 698 km/s
50  => 14 989 622.50000 km/s
60  => 17 987 547 km/s
70  => 20 985 471.50000 km/s
80  => 23 983 396 km/s
90  => 26 981 320.50000 km/s
100  => 29 979 245 km/s
200  => 59 958 490 km/s
300  => 89 937 735 km/s
400  => 119 916 980 km/s
500  => 149 896 225 km/s
600  => 179 875 470 km/s
700  => 209 854 715 km/s
800  => 239 833 960 km/s
900  => 269 813 205 km/s
1 000  => 299 792 450 km/s

Overview table: How many Kilometers per second are how many Speed of light?

Kilometers per second km/sSpeed of light
0.01 km/s => 0.0000000333 
0.02 km/s => 0.0000000667 
0.03 km/s => 0.0000001000 
0.04 km/s => 0.0000001334 
0.05 km/s => 0.0000001667 
0.06 km/s => 0.0000002001 
0.07 km/s => 0.0000002334 
0.08 km/s => 0.0000002668 
0.09 km/s => 0.0000003002 
0.10 km/s => 0.0000003335 
0.20 km/s => 0.0000006671 
0.30 km/s => 0.0000010006 
0.40 km/s => 0.0000013342 
0.50 km/s => 0.0000016678 
0.60 km/s => 0.0000020013 
0.70 km/s => 0.0000023349 
0.80 km/s => 0.0000026685 
0.90 km/s => 0.0000030020 
1 km/s => 0.0000033356 
2 km/s => 0.0000066712 
3 km/s => 0.0000100069 
4 km/s => 0.0000133425 
5 km/s => 0.0000166782 
6 km/s => 0.0000200138 
7 km/s => 0.0000233494 
8 km/s => 0.0000266851 
9 km/s => 0.0000300207 
10 km/s => 0.0000333564 
20 km/s => 0.0000667128 
30 km/s => 0.0001000692 
40 km/s => 0.0001334256 
50 km/s => 0.0001667820 
60 km/s => 0.0002001384 
70 km/s => 0.0002334948 
80 km/s => 0.0002668512 
90 km/s => 0.0003002076 
100 km/s => 0.0003335641 
200 km/s => 0.0006671282 
300 km/s => 0.0010006923 
400 km/s => 0.0013342564 
500 km/s => 0.0016678205 
600 km/s => 0.0020013846 
700 km/s => 0.0023349487 
800 km/s => 0.0026685128 
900 km/s => 0.0030020769 
1 000 km/s => 0.0033356410 

Source information

As source for the information in the "Units of speed" category, we have used in particular:

Last update on November 22, 2020

The pages of the "Units of speed" category were last editorially reviewed by Stefan Banse on November 22, 2020. They all correspond to the current status.

Previous changes on November 9, 2020

  • November 9, 2020: Publication of the Speed converter
  • Editorial revision of all texts in this category