How many GPC in 1 light-year? The answer is 3.0660135220139E-10. We assume you are converting between gigaparsec and light year. You can view more details on each measurement unit: GPC or light-year The SI base unit for length is the metre. 1 metre is equal to 3.2407788498994E-26 GPC, or 1.0570008340246E-16 light-year. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between gigaparsecs and light years. Type in your own numbers in the form to convert the units!
1 GPC to light-year = 3261564219.5314 light-year
2 GPC to light-year = 6523128439.0628 light-year
3 GPC to light-year = 9784692658.5942 light-year
4 GPC to light-year = 13046256878.126 light-year
5 GPC to light-year = 16307821097.657 light-year
6 GPC to light-year = 19569385317.188 light-year
7 GPC to light-year = 22830949536.72 light-year
8 GPC to light-year = 26092513756.251 light-year
9 GPC to light-year = 29354077975.783 light-year
10 GPC to light-year = 32615642195.314 light-year
You can do the reverse unit conversion from light-year to GPC, or enter any two units below:
The SI prefix "giga" represents a factor of 109, or in exponential notation, 1E9.
So 1 gigaparsec = 109 parsecs.
The definition of a parsec is as follows:
The parsec (symbol pc) is a unit of length used in astronomy. It stands for "parallax of one arc second", and is approximately 19,131,554,073,600 (19 trillion) miles.
A light year, abbreviated ly, is the distance light travels in one year: roughly 9.46 × 1012 kilometres (9.46 petametres, or about 5.88 × 1012 (nearly six trillion) miles). More specifically, a light year is defined as the distance that a photon would travel, in free space and infinitely far away from any gravitational or magnetic fields, in one Julian year (365.25 days of 86400 seconds each).
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