Light year 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 light years [ly] to parsecs [pc] or parsecs [pc] to light years [ly]. 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 light year [ly] ≈ 0.3066 parsecs [pc]1 parsec [pc] ≈ 3.2616 light years [ly]

Convert light years to parsecs

There are two simple ways to convert light years [ly] to parsecs [pc]. In the first calculation method, the value in light years [ly] is divided by the rounded conversion factor of 3.2616. The second method multiplies the value in light years [ly] by the rounded conversion factor of 0.3066.

  • Parsecs [pc] ≈ light years [ly] ÷ 3.2616
  • Parsecs [pc] ≈ light years [ly] * 0.3066

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

  • Parsecs [pc] = light years [ly] ÷ 30,857 * 3,981,712 * 23,760,459 ÷ 1010

Convert parsecs to light years

Converting parsecs [pc] to light years [ly] 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 3.2616. The second variant is a division. Here, the value in parsecs [pc] is divided by the rounded conversion factor of 0.3066.

  • Light years [ly] ≈ parsecs [pc] * 3.2616
  • Light years [ly] ≈ parsecs [pc] ÷ 0.3066

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 light years [ly] can be achieved using the following calculation method.

  • Light years [ly] = parsecs [pc] * 30,857 ÷ 3,981,712 ÷ 23,760,459 * 1010

Converter

Decimal places

How it's calculated

Factor: 
≈ 3.262
Parsecs = Light years ÷ 30,857 * 3,981,712 * 23,760,459 ÷ 1010
Light years = Parsecs * 30,857 ÷ 3,981,712 ÷ 23,760,459 * 1010

To all available units

Light years

Planck length

Megameters

Astronomical units

Megameters

Cable lengths

Megameters

Chains

Megameters

⅛ Inches

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