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Parsec Converter

Convert parsecs to light years, AU and kilometres, and find the parallax angle that defines them.

Enter values

Results update as you type.

Result

Parsecs

1

Light years
3.26156
Astronomical units
206,264.81
Kilometres
30,856,775,814,914
Parallax angle
1 arcseconds

About the Parsec Converter

Convert parsecs to light years, AU and kilometres, and find the parallax angle that defines them.

Also known as: parsec to light years, pc to ly, kiloparsec converter, parallax distance.

How to use this calculator

  1. Enter value, unit.
  2. The result updates instantly as you type — press Calculate (or Enter) at any time.
  3. Review the breakdown shown under the main result.
  4. Use Copy result or Share to save the answer or send a link with your inputs.

Formula

1 pc = 3.2616 light years = 206,265 AU · distance (pc) = 1 / parallax (arcsec)

Worked example

Using the values pre-filled in the calculator above:

  • Value = 1
  • Unit: Parsecs

the calculator returns:

  • Parsecs: 1
  • Light years: 3.26156
  • Astronomical units: 206,264.81
  • Kilometres: 30,856,775,814,914