Astronomical unit to Parsec Converter (and vice versa)

Created by: tinycalcs.com/en
Number of supported units: 2
Last update: 2026

This converter allows you to convert astronomical units [au] to parsecs [pc] or parsecs [pc] to astronomical units [au]. Calculations are performed in both directions. The calculation result and the entered value are displayed with up to 20 decimal places for maximum accuracy.

1 astronomical unit [au] ≈ 4.848 * 10-6 parsecs [pc]1 parsec [pc] ≈ 206,266.3048 astronomical units [au]

Convert astronomical units to parsecs

There are two simple ways to convert astronomical units [au] to parsecs [pc]. In the first calculation method, the value in astronomical units [au] is divided by the rounded conversion factor of 206,266.3048. The second method multiplies the value in astronomical units [au] by the rounded conversion factor of 4.848 * 10-6.

  • Parsecs [pc] ≈ astronomical units [au] ÷ 206,266.3048
  • Parsecs [pc] ≈ astronomical units [au] * 4.848 * 10-6

However, rounded conversion values are only suitable for rough conversions, as rounding errors can occur in the calculation result. The most accurate conversion of astronomical units [au] to parsecs [pc] can be achieved using the following calculation method.

  • Parsecs [pc] = astronomical units [au] ÷ 30,857 * 23,367 * 64,021 ÷ 1010

Convert parsecs to astronomical units

Converting parsecs [pc] to astronomical units [au] is easy and can be done in two ways. The first method involves multiplication, in which the value in parsecs [pc] is multiplied by the rounded conversion factor of 206,266.3048. The second variant is a division. Here, the value in parsecs [pc] is divided by the rounded conversion factor of 4.848 * 10-6.

  • Astronomical units [au] ≈ parsecs [pc] * 206,266.3048
  • Astronomical units [au] ≈ parsecs [pc] ÷ (4.848 * 10-6)

However, rounded conversion values do not allow for exact calculations because rounding errors can occur in the calculation result. The most accurate conversion of parsecs [pc] to astronomical units [au] can be achieved using the following calculation method.

  • Astronomical units [au] = parsecs [pc] * 30,857 ÷ 23,367 ÷ 64,021 * 1010

Converter

Decimal places

How it's calculated

Factor: 
≈ 206,266.305
Parsecs = Astronomical units ÷ 30,857 * 23,367 * 64,021 ÷ 1010
Astronomical units = Parsecs * 30,857 ÷ 23,367 ÷ 64,021 * 1010

To all available units

Astronomical units

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Ångströms

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Centimeters