Skip to content

Chains to Light-years (ch to ly) Converter

1 ch = 2.12635 × 10⁻¹⁵ ly

1 Chain equals 2.12635 × 10⁻¹⁵ Light-years (1 ch = 2.12635 × 10⁻¹⁵ ly). Convert Chains to Light-years with formula, table, and examples.

One chain equals approximately 2.127 x 10-15 light-years, an incomprehensibly tiny fraction. The chain (66 feet / 20.12 m) is a land surveying unit; the light-year measures interstellar distances. These units are separated by about 15 orders of magnitude and have no practical connection.

How to Convert Chains to Light-years

ly = ch × 2.12635 × 10⁻¹⁵
Multiply the value in Chains by 2.12635 × 10⁻¹⁵
  1. Take your value in Chains
  2. Multiply by 2.12635 × 10⁻¹⁵
  3. Read the result in Light-years

Common Chains to Light-years Conversions

Chains (ch) Light-years (ly) Status
1 ch 2.12634 × 10⁻¹⁵ ly
100 ch 2.12635 × 10⁻¹³ ly
10,000 ch 2.12635 × 10⁻¹¹ ly
1,000,000 ch 2.12635 × 10⁻⁹ ly
100,000,000 ch 2.12635 × 10⁻⁷ ly
10,000,000,000 ch 0.00002 ly
1,000,000,000,000 ch 0.0021 ly
100,000,000,000,000 ch 0.2126 ly

Good to Know About Chains to Light-years Conversion

Gunter's chain measured English farmland with 7.92-inch links. The light-year measures the void between stars. Placing them side by side is like comparing a raindrop to the Pacific Ocean.

Chains to Light-years: What You Need to Know

One light-year contains about 4.702 x 1014 chains, or about 470 trillion chains. The nearest star at 4.24 light-years is roughly 2 x 1015 chains away. No surveyor has ever measured star distances, and no astronomer has used chains for anything.

What is a Chain? ch

Exactly 66 feet or 4 rods (20.1168 m). Invented by Edmund Gunter for land surveying. 80 chains make one mile. Still used in US public land surveys.

Imperial land surveying US public land
Learn more about Chain →

What is a Light-year? ly

The distance light travels in one Julian year (365.25 days) in vacuum. Exactly 9,460,730,472,580,800 meters. Used for interstellar distances.

Astronomical interstellar distances astronomy popular science
Learn more about Light-year →

Going the other way? Use our Light-years to Chains converter.

Chains to Light-years FAQ

  • One chain equals approximately 2.127 x 10-15 light-years. This is about 2 quadrillionths of a light-year, a number with no practical meaning.

  • One light-year contains approximately 4.702 x 1014 chains (about 470 trillion chains).

  • Never. These units exist in completely different measurement domains: land surveying and interstellar astronomy. The conversion exists only for mathematical completeness.

Non-Frequently Asked Questions About Chains to Light-years

Questions nobody should ask - but someone did.

  • The nearest star is about 4.7 x 1014 chains away. Manufacturing that many chains would require more iron than exists in our solar system. Interstellar chaining remains impractical.