How many light-second in 1 kilometer?
The answer is 3.3356409519815E-6.
We assume you are converting between light second and kilometre.
You can view more details on each measurement unit: light-second or
kilometer
The SI base unit for length is the metre.
1 metre is equal to 3.3356409519815E-9 light-second, or 0.001 kilometer.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between light seconds and kilometres.
Type in your own numbers in the form to convert the units!

››Quick conversion chart of light-second to kilometer

1 light-second to kilometer = 299792.458 kilometer

2 light-second to kilometer = 599584.916 kilometer

3 light-second to kilometer = 899377.374 kilometer

4 light-second to kilometer = 1199169.832 kilometer

5 light-second to kilometer = 1498962.29 kilometer

6 light-second to kilometer = 1798754.748 kilometer

7 light-second to kilometer = 2098547.206 kilometer

8 light-second to kilometer = 2398339.664 kilometer

9 light-second to kilometer = 2698132.122 kilometer

10 light-second to kilometer = 2997924.58 kilometer

››Want other units?

You can do the reverse unit conversion from
kilometer to light-second, or enter any two units below:

A light-second is a unit of length. It is defined as the distance light travels in an absolute vacuum in one second or 299,792,458 meters. Note that this value is considered exact, since the meter is actually (as of 1983) defined in terms of the light second. It is just over 186,282 miles and almost 109 feet.

››Definition: Kilometer

A kilometre (American spelling: kilometer, symbol: km) is a unit of length equal to 1000 metres (from the Greek words khilia = thousand and metro = count/measure). It is approximately equal to 0.621 miles, 1094 yards or 3281 feet.

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