Chain to Astronomical unit Converter (and vice versa)

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

This converter allows you to convert chains [ch] to astronomical units [au] or astronomical units [au] to chains [ch]. 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 chain [ch] ≈ 1.345 * 10-10 astronomical units [au]1 astronomical unit [au] ≈ 7.436 * 109 chains [ch]

Convert chains to astronomical units

There are two simple ways to convert chains [ch] to astronomical units [au]. In the first calculation method, the value in chains [ch] is divided by the rounded conversion factor of 7.436 * 109. The second method multiplies the value in chains [ch] by the rounded conversion factor of 1.345 * 10-10.

  • Astronomical units [au] ≈ chains [ch] ÷ (7.436 * 109)
  • Astronomical units [au] ≈ chains [ch] * 1.345 * 10-10

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

  • Astronomical units [au] = chains [ch] ÷ 23,367 ÷ 64,021 * 201,168 ÷ 106

Convert astronomical units to chains

Converting astronomical units [au] to chains [ch] is easy and can be done in two ways. The first method involves multiplication, in which the value in astronomical units [au] is multiplied by the rounded conversion factor of 7.436 * 109. The second variant is a division. Here, the value in astronomical units [au] is divided by the rounded conversion factor of 1.345 * 10-10.

  • Chains [ch] ≈ astronomical units [au] * 7.436 * 109
  • Chains [ch] ≈ astronomical units [au] ÷ (1.345 * 10-10)

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

  • Chains [ch] = astronomical units [au] * 23,367 * 64,021 ÷ 201,168 * 106

Converter

Decimal places

How it's calculated

Factor: 
≈ 7.436 * 109
Astronomical units = Chains ÷ 23,367 ÷ 64,021 * 201,168 ÷ 106
Chains = Astronomical units * 23,367 * 64,021 ÷ 201,168 * 106

To all available units

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Fathoms

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Gigaparsecs

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Kiloparsecs

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Light days