What is the speed of light in km?

Answer 1

The speed of light in kilometers per hour is 10.8*10power8 km/h, or 1,079,252,848.8 kph.

Check the math:

Light travels at 299,792,458 meters per second. There are 1000 meters in a kilometer, so 299,792,458 mps becomes 299,792.458 kps. There are 60 seconds in a minute, 60 minutes in an hour, so:

299,792.458 x 60 = 17,987,547.48 kpm (kilometers per minute)

17,987,547.48 x 60 = 1,079,252,848.8 kph (kilometers per hour)

Answer 2

The speed of light is approximately 299,792 kilometers per second.

Answer 3

Light travels at about 1,079 million km per hour but it is much easier to say that it travels at about 300.000 km per second which is about 6 times around the earth.

Answer 4

Light travels at 299,792.211 km per second in a vacuum.

Answer 5

The speed of light is 300,000 km per second. This is the same as 7 time around the Earth.

Answer 6

Speed of light c = 299792458 m/s × 1 km/1000 m = 299792.458 km/s.

Speed of light c = 299792.458 km/s × 3600 s/ 1 hr = 1079252848.8 km/hr.

Answer 7

299792.458 kilometers per second.299792458 meters per second

Answer 8

1.07925285 x 109 kilometers per hour

Answer 9

186,282 miles per second.

Answer 10

299,792.458 km per second.