Convert Speed Of Light to Kilometers Per Second

Enter the speed in speed of light below to get the value converted to kilometers per second.

Results in Kilometers Per Second:
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1 c = 299,792.458 km/s

How to Convert Speed Of Light to Kilometers Per Second

Speedometers are used in vehicles to measure speed

To convert a speed of light measurement to a kilometer per second measurement, multiply the speed by the conversion ratio. One speed of light is equal to 299,792.458 kilometers per second, so use this simple formula to convert:

kilometers per second = speed of light × 299,792.458

The speed in kilometers per second is equal to the speed of light multiplied by 299,792.458.

For example, here's how to convert 5 speed of light to kilometers per second using the formula above.
5 c = (5 × 299,792.458) = 1,498,962.29 km/s

Speed of light and kilometers per second are both units used to measure speed. Keep reading to learn more about each unit of measure.

Speed Of Light

The speed of light is equal to exactly 299,792,458 meters per second, or 670,616,629 miles per hour.

Speed of light can be abbreviated as c, for example 1 speed of light can be written as 1 c.

Kilometers Per Second

Kilometers per second are a measurement of speed expressing the distance travelled in kilometers in one second.

The kilometer per second, or kilometre per second, is an SI unit of speed in the metric system. Kilometers per second can be abbreviated as km/s, and are also sometimes abbreviated as km/sec. For example, 1 kilometer per second can be written as 1 km/s or 1 km/sec.

Kilometers per second can be expressed using the formula:
vkm/s = dkmtsec

The velocity in kilometers per second is equal to the distance in kilometers divided by time in seconds.

Speed Of Light Measurements and Equivalent Kilometer Per Second Conversions

Common speed of light values converted to the equivalent kilometer per second value
Speed Of Light Kilometers Per Second
1 c 299,792 km/s
2 c 599,585 km/s
3 c 899,377 km/s
4 c 1,199,170 km/s
5 c 1,498,962 km/s
6 c 1,798,755 km/s
7 c 2,098,547 km/s
8 c 2,398,340 km/s
9 c 2,698,132 km/s
10 c 2,997,925 km/s
11 c 3,297,717 km/s
12 c 3,597,509 km/s
13 c 3,897,302 km/s
14 c 4,197,094 km/s
15 c 4,496,887 km/s
16 c 4,796,679 km/s
17 c 5,096,472 km/s
18 c 5,396,264 km/s
19 c 5,696,057 km/s
20 c 5,995,849 km/s
21 c 6,295,642 km/s
22 c 6,595,434 km/s
23 c 6,895,227 km/s
24 c 7,195,019 km/s
25 c 7,494,811 km/s
26 c 7,794,604 km/s
27 c 8,094,396 km/s
28 c 8,394,189 km/s
29 c 8,693,981 km/s
30 c 8,993,774 km/s
31 c 9,293,566 km/s
32 c 9,593,359 km/s
33 c 9,893,151 km/s
34 c 10,192,944 km/s
35 c 10,492,736 km/s
36 c 10,792,528 km/s
37 c 11,092,321 km/s
38 c 11,392,113 km/s
39 c 11,691,906 km/s
40 c 11,991,698 km/s

More Speed Of Light Speed Conversions

Convert to Knots
1 c is equal to 582,749,918.4 knots
Convert to Mach
1 c is equal to Mach 874,030.5
Convert to Speed Of Sound
1 c is equal to 874,030.5 speed of sound
Convert to Miles Per Hour
1 c is equal to 670,616,629.4 miles per hour
Convert to Feet Per Second
1 c is equal to 983,571,056.4 feet per second
Convert to Kilometers Per Hour
1 c is equal to 1,079,252,848.8 kilometers per hour
Convert to Meters Per Second
1 c is equal to 299,792,458 meters per second
Convert to Centimeters Per Second
1 c is equal to 29,979,245,800 centimeters per second