Parsecs to Lightyears Converter (pc to ly)
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Parsecs to Lightyears
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Convert Lightyears to Parsecs (ly to pc) ▶

Conversion Table

parsecs to lightyears
pcly
1 pc 3.2616 ly
2 pc 6.5233 ly
3 pc 9.7849 ly
4 pc 13.0465 ly
5 pc 16.3082 ly
6 pc 19.5698 ly
7 pc 22.8314 ly
8 pc 26.0931 ly
9 pc 29.3547 ly
10 pc 32.6163 ly
11 pc 35.878 ly
12 pc 39.1396 ly
13 pc 42.4012 ly
14 pc 45.6629 ly
15 pc 48.9245 ly
16 pc 52.1861 ly
17 pc 55.4478 ly
18 pc 58.7094 ly
19 pc 61.971 ly
20 pc 65.2327 ly

How to convert

1 parsec (pc) = 3.26163344 lightyear (ly). Parsec (pc) is a unit of Length used in Metric system. Lightyear (ly) is a unit of Length used in Metric system.

Parsec: A Unit of Length

A parsec is a unit of length that is often used in astronomy to measure the large distances to astronomical objects outside the Solar System. It is approximately equal to 3.26 light-years or 206,265 astronomical units (au), which are the average distances from the Earth to the Sun. One parsec is about 30.9 trillion kilometres or 19.2 trillion miles.

How to convert parsec

To convert parsecs to other units of length, we can use the following conversion factors:

  • 1 pc = 3.0857 × 10^16 m
  • 1 pc = 1.9174 × 10^13 mi
  • 1 pc = 2.06265 × 10^5 au
  • 1 pc = 3.26156 ly

To convert other units of length to parsecs, we can use the inverse of these conversion factors:

  • 1 m = 3.24078 × 10^-17 pc
  • 1 mi = 5.21553 × 10^-14 pc
  • 1 au = 4.84814 × 10^-6 pc
  • 1 ly = 0.306601 pc
  • How many parsecs are in one light-year?

To convert one light-year to parsecs, we divide by the conversion factor:

1 ly / (3.26156 ly/pc) = 0.306601 pc

Lightyear: A Unit of Length

The lightyear is a large unit of length used to express astronomical distances and is equivalent to about 9.46 trillion kilometers (9.46 × 10^12 km), or 5.88 trillion miles (5.88 × 10^12 mi). As defined by the International Astronomical Union (IAU), a lightyear is the distance that light travels in a vacuum in one Julian year (365.25 days). The lightyear is most often used when expressing distances to stars and other distances on a galactic scale, especially in non-specialist contexts and popular science publications.

In this article, we will explore the definition, history, usage and conversion of the lightyear as a unit of length.

Example Conversions of Lightyear to Other Units

The lightyear can be converted to other units of length by using different factors and formulas. Here are some examples of conversion for different types of units:

  • To convert a lightyear to kilometers, multiply by 9.46 × 10^12:

1 ly × 9.46 × 10^12 = 9.46 × 10^12 km

  • To convert a lightyear to miles, multiply by 5.88 × 10^12:

1 ly × 5.88 × 10^12 = 5.88 × 10^12 mi

  • To convert a lightyear to AU, multiply by 63,241:

1 ly × 63,241 = 63,241 AU

  • To convert a lightyear to parsecs, divide by 3.26:

1 ly / 3.26 = 0.31 pc

  • To convert a kilometer to lightyears, divide by 9.46 × 10^12:

1 km / 9.46 × 10^12 = 1.06 × 10^-13 ly

  • To convert a mile to lightyears, divide by 5.88 × 10^12:

1 mi / 5.88 × 10^12 = 1.70 × 10^-13 ly

  • To convert an AU to lightyears, divide by 63,241:

1 AU / 63,241 = 1.58 × 10^-5 ly

  • To convert a parsec to lightyears, multiply by 3.26:

1 pc × 3.26 = 3.26 ly



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