How many gigalight-year in 1 light-second?
The answer is 3.1709791983765E-17.

We assume you are converting between **gigalight year** and **light second**.

You can view more details on each measurement unit:

gigalight-year or
light-second

The SI base unit for **length** is the metre.

1 metre is equal to 1.0577248071986E-25 gigalight-year, or 3.3356409519815E-9 light-second.

Note that rounding errors may occur, so always check the results.

Use this page to learn how to convert between gigalight years and light seconds.

Type in your own numbers in the form to convert the units!

1 gigalight-year to light-second = 3.1536E+16 light-second

2 gigalight-year to light-second = 6.3072E+16 light-second

3 gigalight-year to light-second = 9.4608E+16 light-second

4 gigalight-year to light-second = 1.26144E+17 light-second

5 gigalight-year to light-second = 1.5768E+17 light-second

6 gigalight-year to light-second = 1.89216E+17 light-second

7 gigalight-year to light-second = 2.20752E+17 light-second

8 gigalight-year to light-second = 2.52288E+17 light-second

9 gigalight-year to light-second = 2.83824E+17 light-second

10 gigalight-year to light-second = 3.1536E+17 light-second

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

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gigalight-year to pole

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gigalight-year to decameter

One gigalight-year, abbreviation "Gly", is one billion light-years — one of the largest distance measures used. One gigalight-year equals 306.601 million parsecs, or roughly one-thirteenth the distance to the horizon of the observable universe (dictated by the cosmic background radiation). Gigalight-years are typically used to measure distances to supergalactic structures, such as clusters of quasars or the Great Wall.

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.

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