# speed of light to kilometre per second conversion

Conversion number between speed of light [c] and kilometre per second [km/s] is 299792.458. This means, that speed of light is bigger unit than kilometre per second.

### Contents [show][hide]

Switch to reverse conversion:
from kilometre per second to speed of light conversion

### Enter the number in speed of light:

Decimal Fraction Exponential Expression
 [c]
eg.: 10.12345 or 1.123e5

Result in kilometre per second

?
 precision 0 1 2 3 4 5 6 7 8 9 [info] Decimal: Exponential:

### Calculation process of conversion value

• 1 speed of light = (exactly) (299792458) / (1000) = 299792.458 kilometre per second
• 1 kilometre per second = (exactly) (1000) / (299792458) = 3.3356409519815 × 10-6 speed of light
• ? speed of light × (299792458  ("m/s"/"speed of light")) / (1000  ("m/s"/"kilometre per second")) = ? kilometre per second

### High precision conversion

If conversion between speed of light to metre-per-second and metre-per-second to kilometre per second is exactly definied, high precision conversion from speed of light to kilometre per second is enabled.

Decimal places: (0-800)

speed of light
Result in kilometre per second:
?

### speed of light to kilometre per second conversion chart

 Start value: [speed of light] Step size [speed of light] How many lines? (max 100)

visual:
speed of lightkilometre per second
00
102997924.58
205995849.16
308993773.74
4011991698.32
5014989622.9
6017987547.48
7020985472.06
8023983396.64
9026981321.22
10029979245.8
11032977170.38
Copy to Excel

## Multiple conversion

Enter numbers in speed of light and click convert button.
One number per line.

Converted numbers in kilometre per second:
Click to select all

## Details about speed of light and kilometre per second units:

Convert Speed of light to other unit:

### speed of light

Definition of speed of light unit: ≡ 299 792 458 m/s. Light velocity (in vacuum) is one of the basic physical constants. Sign c (Latin celeritas = speed). Its value is exactly: 299792458 m/s. Example: electromagnetic waves propagation speed 1 c.

Convert Kilometre per second to other unit:

### kilometre per second

Definition of kilometre per second unit: ≡ 1 km / 1 s. The speed with which the body moves 1 km in 1 second. The Earth's circulation speed is about 30 km/s.

← Back to Speed units