Convert Light-Year to Fathom Online

About Light-Year to Fathom Conversion

This converter converts Light-Year (ly) to Fathom (ftm). One Light-Year (ly) equals 5173190328401575 Fathom (ftm).

Formula:

1 Light-Year (ly) = 5173190328401575 Fathom (ftm)

Example:

1 ly = 5173190328401575 ftm
2 ly = 10346380656803150 ftm

Light-Year (ly) to Fathom (ftm) Conversion

Light-Year to Fathom conversion explained with exact factors, step-by-step examples, and situations where this conversion is commonly used.

Conversion Formula

Fathom = Light-Year × 5.173190e+15

To convert Light-Year (ly) to Fathom (ftm), multiply the value by 5.173190e+15. This factor is obtained by comparing their exact meter definitions.

Worked Example

Convert 1 ly to ftm.

  • Step 1: Write the formula: ftm = ly × 5.173190e+15
  • Step 2: Substitute: 1 × 5.173190e+15
  • Step 3: Result: 5.173190e+15 ftm
So, 1 ly = 5.173190e+15 ftm.

About the Units

Light-Year (ly)

One Light-Year (ly) equals 5.173190e+15 Fathom (ftm)

Used for extremely large distances such as astronomical or planetary scales.

Fathom (ftm)

One Fathom (ftm) equals 1.933043e-16 Light-Year (ly)

A widely used unit across scientific, engineering, and measurement contexts.

Where This Conversion Is Used

  • Converting values from Light-Year to Fathom for engineering or scientific workflows.
  • Used when normalizing mixed-unit datasets requiring consistent Fathom representation.
  • Applied when comparing different measurement systems across tools and documents.
  • Essential in astronomy, orbital mechanics, and large-scale simulations.

Frequently Asked Questions

How many Fathom (ftm) are in 1 Light-Year (ly)?

1 ly = 5.173190e+15 ftm.

What is the formula for converting Light-Year (ly) to Fathom (ftm)?

Multiply the ly value by 5.173190e+15.

Can I reverse the conversion?

Yes. 1 ftm = 1.933043e-16 ly.

Conclusion

By applying the conversion factor shown above, you can reliably convert Light-Year (ly) to Fathom (ftm) for use in scientific analysis, engineering calculations, academic work, or daily measurements.

Quick Links for Unit Converters

Convert Light-Year to Other Units

Light-Year to Inch

1 ly = 372469703644913400 in

1 Light-Year (ly) = 372469703644913400 Inches (in)

1 Light-Year equals 372469703644913400 inches.

Light-Year to Foot

1 ly = 31039141970409450 ft

1 Light-Year (ly) = 31039141970409450 Feet (ft)

1 Light-Year equals 31039141970409450 feet.

Light-Year to Feet

1 ly = 31039141970409450 ft

1 Light-Year (ly) = 31039141970409450 Feets (ft)

1 Light-Year equals 31039141970409450 feets.

Light-Year to Centimeter

1 ly = 946073047258080000 cm

1 Light-Year (ly) = 946073047258080000 Centimeters (cm)

1 Light-Year equals 946073047258080000 centimeters.

Light-Year to Meter

1 ly = 9460730472580800 m

1 Light-Year (ly) = 9460730472580800 Meters (m)

1 Light-Year equals 9460730472580800 meters.

Light-Year to Kilometer

1 ly = 9460730472580.8 km

1 Light-Year (ly) = 9460730472580.8 Kilometers (km)

1 Light-Year equals 9460730472580.8 kilometers.

Light-Year to Millimeter

1 ly = 9460730472580800000 mm

1 Light-Year (ly) = 9460730472580800000 Millimeters (mm)

1 Light-Year equals 9460730472580800000 millimeters.

Light-Year to Yard

1 ly = 10346380656803150 yd

1 Light-Year (ly) = 10346380656803150 Yards (yd)

1 Light-Year equals 10346380656803150 yards.

Light-Year to Yoctometer

1 ly = 9.460730472580801e+39 ym

1 Light-Year (ly) = 9.460730472580801e+39 Yoctometers (ym)

1 Light-Year equals 9.460730472580801e+39 yoctometers.

Light-Year to Zeptometer

1 ly = 9.4607304725808e+36 zm

1 Light-Year (ly) = 9.4607304725808e+36 Zeptometers (zm)

1 Light-Year equals 9.4607304725808e+36 zeptometers.

Light-Year to Attometer

1 ly = 9.4607304725808e+33 am

1 Light-Year (ly) = 9.4607304725808e+33 Attometers (am)

1 Light-Year equals 9.4607304725808e+33 attometers.

Light-Year to Femtometer

1 ly = 9.460730472580799e+30 fm

1 Light-Year (ly) = 9.460730472580799e+30 Femtometers (fm)

1 Light-Year equals 9.460730472580799e+30 femtometers.

Light-Year to Picometer

1 ly = 9.4607304725808e+27 pm

1 Light-Year (ly) = 9.4607304725808e+27 Picometers (pm)

1 Light-Year equals 9.4607304725808e+27 picometers.

Light-Year to Nanometer

1 ly = 9.4607304725808e+24 nm

1 Light-Year (ly) = 9.4607304725808e+24 Nanometers (nm)

1 Light-Year equals 9.4607304725808e+24 nanometers.

Light-Year to Micrometer

1 ly = 9.460730472580801e+21 µm

1 Light-Year (ly) = 9.460730472580801e+21 Micrometers (µm)

1 Light-Year equals 9.460730472580801e+21 micrometers.

Light-Year to Decimeter

1 ly = 94607304725808000 dm

1 Light-Year (ly) = 94607304725808000 Decimeters (dm)

1 Light-Year equals 94607304725808000 decimeters.

Light-Year to Decameter

1 ly = 946073047258080 dam

1 Light-Year (ly) = 946073047258080 Decameters (dam)

1 Light-Year equals 946073047258080 decameters.

Light-Year to Hectometer

1 ly = 94607304725808 hm

1 Light-Year (ly) = 94607304725808 Hectometers (hm)

1 Light-Year equals 94607304725808 hectometers.

Light-Year to Megameter

1 ly = 9460730472.5808 Mm

1 Light-Year (ly) = 9460730472.5808 Megameters (Mm)

1 Light-Year equals 9460730472.5808 megameters.

Light-Year to Gigameter

1 ly = 9460730.4725808 Gm

1 Light-Year (ly) = 9460730.4725808 Gigameters (Gm)

1 Light-Year equals 9460730.4725808 gigameters.

Light-Year to Terameter

1 ly = 9460.7304725808 Tm

1 Light-Year (ly) = 9460.7304725808 Terameters (Tm)

1 Light-Year equals 9460.7304725808 terameters.

Light-Year to Petameter

1 ly = 9.4607304725808 Pm

1 Light-Year (ly) = 9.4607304725808 Petameters (Pm)

1 Light-Year equals 9.4607304725808 petameters.

Light-Year to Exameter

1 ly = 0.0094607304725808 Em

1 Light-Year (ly) = 0.0094607304725808 Exameter (Em)

1 Light-Year equals 0.0094607304725808 exameter.

Light-Year to Zettameter

1 ly = 0.0000094607304725808 Zm

1 Light-Year (ly) = 0.0000094607304725808 Zettameter (Zm)

1 Light-Year equals 0.0000094607304725808 zettameter.

Light-Year to Yottameter

1 ly = 9.4607304725808e-9 Ym

1 Light-Year (ly) = 9.4607304725808e-9 Yottameter (Ym)

1 Light-Year equals 9.4607304725808e-9 yottameter.

Light-Year to Cubit

1 ly = 20692761313606300 cubit

1 Light-Year (ly) = 20692761313606300 Cubits (cubit)

1 Light-Year equals 20692761313606300 cubits.

Light-Year to Span

1 ly = 41385522627212600 span

1 Light-Year (ly) = 41385522627212600 Spans (span)

1 Light-Year equals 41385522627212600 spans.

Light-Year to Hand

1 ly = 93117425911228350 hh

1 Light-Year (ly) = 93117425911228350 Hands (hh)

1 Light-Year equals 93117425911228350 hands.

Light-Year to Palm

1 ly = 124156567881637800 palm

1 Light-Year (ly) = 124156567881637800 Palms (palm)

1 Light-Year equals 124156567881637800 palms.

Light-Year to Digit

1 ly = 496626271526551200 digit

1 Light-Year (ly) = 496626271526551200 Digits (digit)

1 Light-Year equals 496626271526551200 digits.

Light-Year to Link

1 ly = 47029002985468856 link

1 Light-Year (ly) = 47029002985468856 Links (link)

1 Light-Year equals 47029002985468856 links.

Light-Year to Ell

1 ly = 8277104525442520 ell

1 Light-Year (ly) = 8277104525442520 Ells (ell)

1 Light-Year equals 8277104525442520 ells.

Light-Year to Barleycorn

1 ly = 1116969359218512400 barleycorn

1 Light-Year (ly) = 1116969359218512400 Barleycorns (barleycorn)

1 Light-Year equals 1116969359218512400 barleycorns.

Light-Year to Astronomical Unit

1 ly = 63241.07708426628 AU

1 Light-Year (ly) = 63241.07708426628 Astronomical Units (AU)

1 Light-Year equals 63241.07708426628 Astronomicalunits.

Light-Year to Light-Second

1 ly = 31557600 ls

1 Light-Year (ly) = 31557600 Light-Seconds (ls)

1 Light-Year equals 31557600 Light-Seconds.

Light-Year to Light-Minute

1 ly = 525960 lm

1 Light-Year (ly) = 525960 Light-Minutes (lm)

1 Light-Year equals 525960 Light-Minutes.

Light-Year to Light-Hour

1 ly = 8765.999998375542 lh

1 Light-Year (ly) = 8765.999998375542 Light-Hours (lh)

1 Light-Year equals 8765.999998375542 Light-Hours.

Light-Year to Light-Day

1 ly = 365.25000001692143 ld

1 Light-Year (ly) = 365.25000001692143 Light-Days (ld)

1 Light-Year equals 365.25000001692143 Light-Days.

Light-Year to Parsec

1 ly = 0.3066013937855503 pc

1 Light-Year (ly) = 0.3066013937855503 Parsec (pc)

1 Light-Year equals 0.3066013937855503 Parsec.

Light-Year to Kiloparsec

1 ly = 0.0003066013937855503 kpc

1 Light-Year (ly) = 0.0003066013937855503 Kiloparsec (kpc)

1 Light-Year equals 0.0003066013937855503 Kiloparsec.

Light-Year to Megaparsec

1 ly = 3.066013937855503e-7 Mpc

1 Light-Year (ly) = 3.066013937855503e-7 Megaparsec (Mpc)

1 Light-Year equals 3.066013937855503e-7 Megaparsec.

Light-Year to Gigaparsec

1 ly = 3.066013937855503e-10 Gpc

1 Light-Year (ly) = 3.066013937855503e-10 Gigaparsec (Gpc)

1 Light-Year equals 3.066013937855503e-10 Gigaparsec.

Light-Year to Nautical Mile

1 ly = 5108385784330.886 NM

1 Light-Year (ly) = 5108385784330.886 Nautical Miles (NM)

1 Light-Year equals 5108385784330.886 Nautical Miles.

Light-Year to Fathom

1 ly = 5173190328401575 ftm

1 Light-Year (ly) = 5173190328401575 Fathoms (ftm)

1 Light-Year equals 5173190328401575 fathoms.

Light-Year to Cable Length

1 ly = 43109919403346.46 cable

1 Light-Year (ly) = 43109919403346.46 Cable Lengths (cable)

1 Light-Year equals 43109919403346.46 Cable Length s.

Light-Year to Nautical League

1 ly = 1702795261443.6284 NL

1 Light-Year (ly) = 1702795261443.6284 Nautical Leagues (NL)

1 Light-Year equals 1702795261443.6284 Nautical Leagues.

Light-Year to Thou

1 ly = 372469703644913400000 mil

1 Light-Year (ly) = 372469703644913400000 Thous (mil)

1 Light-Year equals 372469703644913400000 thous.

Light-Year to Rod

1 ly = 1881160119418754.2 rd

1 Light-Year (ly) = 1881160119418754.2 Rods (rd)

1 Light-Year equals 1881160119418754.2 rods.

Light-Year to Chain

1 ly = 470290029854688.56 ch

1 Light-Year (ly) = 470290029854688.56 Chains (ch)

1 Light-Year equals 470290029854688.56 chains.

Light-Year to Furlong

1 ly = 47029002985468.86 fur

1 Light-Year (ly) = 47029002985468.86 Furlongs (fur)

1 Light-Year equals 47029002985468.86 furlongs.

Light-Year to Mile

1 ly = 5878625373183.607 mi

1 Light-Year (ly) = 5878625373183.607 Miles (mi)

1 Light-Year equals 5878625373183.607 miles.

Light-Year to League

1 ly = 1959541791061.2026 lea

1 Light-Year (ly) = 1959541791061.2026 Leagues (lea)

1 Light-Year equals 1959541791061.2026 leagues.

Convert Fathom to Other Units

Fathom to Inch

1 ftm = 72 in

1 Fathom (ftm) = 72 Inches (in)

1 fathom equals 72 inches.

Fathom to Foot

1 ftm = 6 ft

1 Fathom (ftm) = 6 Feet (ft)

1 fathom equals 6 feet.

Fathom to Feet

1 ftm = 6 ft

1 Fathom (ftm) = 6 Feets (ft)

1 fathom equals 6 feets.

Fathom to Centimeter

1 ftm = 182.88 cm

1 Fathom (ftm) = 182.88 Centimeters (cm)

1 fathom equals 182.88 centimeters.

Fathom to Meter

1 ftm = 1.8288 m

1 Fathom (ftm) = 1.8288 Meters (m)

1 fathom equals 1.8288 meters.

Fathom to Kilometer

1 ftm = 0.0018288 km

1 Fathom (ftm) = 0.0018288 Kilometer (km)

1 fathom equals 0.0018288 kilometer.

Fathom to Millimeter

1 ftm = 1828.8 mm

1 Fathom (ftm) = 1828.8 Millimeters (mm)

1 fathom equals 1828.8 millimeters.

Fathom to Yard

1 ftm = 2 yd

1 Fathom (ftm) = 2 Yards (yd)

1 fathom equals 2 yards.

Fathom to Yoctometer

1 ftm = 1.8288000000000002e+24 ym

1 Fathom (ftm) = 1.8288000000000002e+24 Yoctometers (ym)

1 fathom equals 1.8288000000000002e+24 yoctometers.

Fathom to Zeptometer

1 ftm = 1.8288000000000003e+21 zm

1 Fathom (ftm) = 1.8288000000000003e+21 Zeptometers (zm)

1 fathom equals 1.8288000000000003e+21 zeptometers.

Fathom to Attometer

1 ftm = 1828799999999999700 am

1 Fathom (ftm) = 1828799999999999700 Attometers (am)

1 fathom equals 1828799999999999700 attometers.

Fathom to Femtometer

1 ftm = 1828799999999999.8 fm

1 Fathom (ftm) = 1828799999999999.8 Femtometers (fm)

1 fathom equals 1828799999999999.8 femtometers.

Fathom to Picometer

1 ftm = 1828800000000 pm

1 Fathom (ftm) = 1828800000000 Picometers (pm)

1 fathom equals 1828800000000 picometers.

Fathom to Nanometer

1 ftm = 1828799999.9999998 nm

1 Fathom (ftm) = 1828799999.9999998 Nanometers (nm)

1 fathom equals 1828799999.9999998 nanometers.

Fathom to Micrometer

1 ftm = 1828800 µm

1 Fathom (ftm) = 1828800 Micrometers (µm)

1 fathom equals 1828800 micrometers.

Fathom to Decimeter

1 ftm = 18.288 dm

1 Fathom (ftm) = 18.288 Decimeters (dm)

1 fathom equals 18.288 decimeters.

Fathom to Decameter

1 ftm = 0.18288 dam

1 Fathom (ftm) = 0.18288 Decameter (dam)

1 fathom equals 0.18288 decameter.

Fathom to Hectometer

1 ftm = 0.018288 hm

1 Fathom (ftm) = 0.018288 Hectometer (hm)

1 fathom equals 0.018288 hectometer.

Fathom to Megameter

1 ftm = 0.0000018288 Mm

1 Fathom (ftm) = 0.0000018288 Megameter (Mm)

1 fathom equals 0.0000018288 megameter.

Fathom to Gigameter

1 ftm = 1.8288e-9 Gm

1 Fathom (ftm) = 1.8288e-9 Gigameter (Gm)

1 fathom equals 1.8288e-9 gigameter.

Fathom to Terameter

1 ftm = 1.8288e-12 Tm

1 Fathom (ftm) = 1.8288e-12 Terameter (Tm)

1 fathom equals 1.8288e-12 terameter.

Fathom to Petameter

1 ftm = 1.8288e-15 Pm

1 Fathom (ftm) = 1.8288e-15 Petameter (Pm)

1 fathom equals 1.8288e-15 petameter.

Fathom to Exameter

1 ftm = 1.8288e-18 Em

1 Fathom (ftm) = 1.8288e-18 Exameter (Em)

1 fathom equals 1.8288e-18 exameter.

Fathom to Zettameter

1 ftm = 1.8288e-21 Zm

1 Fathom (ftm) = 1.8288e-21 Zettameter (Zm)

1 fathom equals 1.8288e-21 zettameter.

Fathom to Yottameter

1 ftm = 1.8288e-24 Ym

1 Fathom (ftm) = 1.8288e-24 Yottameter (Ym)

1 fathom equals 1.8288e-24 yottameter.

Fathom to Cubit

1 ftm = 4 cubit

1 Fathom (ftm) = 4 Cubits (cubit)

1 fathom equals 4 cubits.

Fathom to Span

1 ftm = 8 span

1 Fathom (ftm) = 8 Spans (span)

1 fathom equals 8 spans.

Fathom to Hand

1 ftm = 18 hh

1 Fathom (ftm) = 18 Hands (hh)

1 fathom equals 18 hands.

Fathom to Palm

1 ftm = 24 palm

1 Fathom (ftm) = 24 Palms (palm)

1 fathom equals 24 palms.

Fathom to Digit

1 ftm = 96 digit

1 Fathom (ftm) = 96 Digits (digit)

1 fathom equals 96 digits.

Fathom to Link

1 ftm = 9.09090909090909 link

1 Fathom (ftm) = 9.09090909090909 Links (link)

1 fathom equals 9.09090909090909 links.

Fathom to Ell

1 ftm = 1.5999999999999999 ell

1 Fathom (ftm) = 1.5999999999999999 Ells (ell)

1 fathom equals 1.5999999999999999 ells.

Fathom to Barleycorn

1 ftm = 215.91499409681228 barleycorn

1 Fathom (ftm) = 215.91499409681228 Barleycorns (barleycorn)

1 fathom equals 215.91499409681228 barleycorns.

Fathom to Astronomical Unit

1 ftm = 1.2224772929204532e-11 AU

1 Fathom (ftm) = 1.2224772929204532e-11 Astronomical Unit (AU)

1 fathom equals 1.2224772929204532e-11 Astronomicalunit.

Fathom to Light-Second

1 ftm = 6.100220172983805e-9 ls

1 Fathom (ftm) = 6.100220172983805e-9 Light-Second (ls)

1 fathom equals 6.100220172983805e-9 Light-Second.

Fathom to Light-Minute

1 ftm = 1.0167033621639674e-10 lm

1 Fathom (ftm) = 1.0167033621639674e-10 Light-Minute (lm)

1 fathom equals 1.0167033621639674e-10 Light-Minute.

Fathom to Light-Hour

1 ftm = 1.6945056032925978e-12 lh

1 Fathom (ftm) = 1.6945056032925978e-12 Light-Hour (lh)

1 fathom equals 1.6945056032925978e-12 Light-Hour.

Fathom to Light-Day

1 ftm = 7.06044001535465e-14 ld

1 Fathom (ftm) = 7.06044001535465e-14 Light-Day (ld)

1 fathom equals 7.06044001535465e-14 Light-Day.

Fathom to Light-Year

1 ftm = 1.9330431252642168e-16 ly

1 Fathom (ftm) = 1.9330431252642168e-16 Light-Year (ly)

1 fathom equals 1.9330431252642168e-16 Light-Year.

Fathom to Parsec

1 ftm = 5.926737164535849e-17 pc

1 Fathom (ftm) = 5.926737164535849e-17 Parsec (pc)

1 fathom equals 5.926737164535849e-17 Parsec.

Fathom to Kiloparsec

1 ftm = 5.92673716453585e-20 kpc

1 Fathom (ftm) = 5.92673716453585e-20 Kiloparsec (kpc)

1 fathom equals 5.92673716453585e-20 Kiloparsec.

Fathom to Megaparsec

1 ftm = 5.92673716453585e-23 Mpc

1 Fathom (ftm) = 5.92673716453585e-23 Megaparsec (Mpc)

1 fathom equals 5.92673716453585e-23 Megaparsec.

Fathom to Gigaparsec

1 ftm = 5.92673716453585e-26 Gpc

1 Fathom (ftm) = 5.92673716453585e-26 Gigaparsec (Gpc)

1 fathom equals 5.92673716453585e-26 Gigaparsec.

Fathom to Nautical Mile

1 ftm = 0.0009874730021598272 NM

1 Fathom (ftm) = 0.0009874730021598272 Nautical Mile (NM)

1 fathom equals 0.0009874730021598272 Nautical Mile.

Fathom to Cable Length

1 ftm = 0.008333333333333333 cable

1 Fathom (ftm) = 0.008333333333333333 Cable Length (cable)

1 fathom equals 0.008333333333333333 Cable Length .

Fathom to Nautical League

1 ftm = 0.0003291576673866091 NL

1 Fathom (ftm) = 0.0003291576673866091 Nautical League (NL)

1 fathom equals 0.0003291576673866091 Nautical League.

Fathom to Thou

1 ftm = 72000 mil

1 Fathom (ftm) = 72000 Thous (mil)

1 fathom equals 72000 thous.

Fathom to Rod

1 ftm = 0.3636363636363636 rd

1 Fathom (ftm) = 0.3636363636363636 Rod (rd)

1 fathom equals 0.3636363636363636 rod.

Fathom to Chain

1 ftm = 0.0909090909090909 ch

1 Fathom (ftm) = 0.0909090909090909 Chain (ch)

1 fathom equals 0.0909090909090909 chain.

Fathom to Furlong

1 ftm = 0.00909090909090909 fur

1 Fathom (ftm) = 0.00909090909090909 Furlong (fur)

1 fathom equals 0.00909090909090909 furlong.

Fathom to Mile

1 ftm = 0.0011363636363636363 mi

1 Fathom (ftm) = 0.0011363636363636363 Mile (mi)

1 fathom equals 0.0011363636363636363 mile.

Fathom to League

1 ftm = 0.0003787878787878788 lea

1 Fathom (ftm) = 0.0003787878787878788 League (lea)

1 fathom equals 0.0003787878787878788 league.