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Light Year to Fathom Converter

Convert light years (ly) to fathoms (ftm). 1 ly = 5.173190328 × 10¹⁵ ftm.

1 ly = 5.173190328 × 10¹⁵ ftm

Fathom to Light Year converter

How to convert light years to fathoms

1 light year is equal to 5.173190328 × 10¹⁵ fathoms, and 1 fathom is equal to 1.933043125 × 10⁻¹⁶ light years. To convert, multiply by the conversion factor:

fathoms = light years × 5.173190328 × 10¹⁵
fathoms = light years ÷ 1.933043125 × 10⁻¹⁶

Example: convert 1 ly to ftm: 1 × 5.173190328 × 10¹⁵ = 5.173190328 × 10¹⁵ ftm.

Light Year to Fathom conversion table

Light Year (ly)Fathom (ftm)
0.01 ly51,731,903,280,000 ftm
0.1 ly517,319,032,800,000 ftm
1 ly5.173190328 × 10¹⁵ ftm
2 ly1.034638066 × 10¹⁶ ftm
3 ly1.551957099 × 10¹⁶ ftm
5 ly2.586595164 × 10¹⁶ ftm
10 ly5.173190328 × 10¹⁶ ftm
20 ly1.034638066 × 10¹⁷ ftm
50 ly2.586595164 × 10¹⁷ ftm
100 ly5.173190328 × 10¹⁷ ftm
250 ly1.293297582 × 10¹⁸ ftm
500 ly2.586595164 × 10¹⁸ ftm
1,000 ly5.173190328 × 10¹⁸ ftm

About the light year

A light-year is the distance light travels in a vacuum in one Julian year (365.25 days): about 9.46 trillion km. The nearest star system, Alpha Centauri, is about 4.37 light-years away.

Symbol: ly · 1 ly = 9.460730473 × 10¹⁵ m · Category: Astronomical

About the fathom

The fathom is 6 feet (1.8288 m). It's used to measure the depth of water on nautical charts and fishing lines.

Symbol: ftm · 1 ftm = 1.8288 m · Category: Imperial & US customary

Frequently asked questions

How many fathoms are in a light year?

There are 5.173190328 × 10¹⁵ fathoms in 1 light year (ly).

How many light years are in a fathom?

1 fathom (ftm) equals 1.933043125 × 10⁻¹⁶ light years.

How do I convert light years to fathoms?

Multiply the length in light years by 5.173190328 × 10¹⁵. For example, 1 ly × 5.173190328 × 10¹⁵ = 5.173190328 × 10¹⁵ ftm.

How do I convert fathoms to light years?

Divide the length in fathoms by 5.173190328 × 10¹⁵, or multiply it by 1.933043125 × 10⁻¹⁶. You can also use the Fathom to Light Year converter.