Convert Kilometer to Light-Year Online

About Kilometer to Light-Year Conversion

This converter converts Kilometer (km) to Light-Year (ly). One Kilometer (km) equals 1.0570008340246155e-13 Light-Year (ly).

Formula:

1 Kilometer (km) = 1.0570008340246155e-13 Light-Year (ly)

Example:

1 km = 1.0570008340246155e-13 ly
2 km = 2.114001668049231e-13 ly

Kilometer (km) to Light-Year (ly) Conversion

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

Conversion Formula

Light-Year = Kilometer × 1.057001e-13

To convert Kilometer (km) to Light-Year (ly), multiply the value by 1.057001e-13. This factor is obtained by comparing their exact meter definitions.

Worked Example

Convert 1 km to ly.

  • Step 1: Write the formula: ly = km × 1.057001e-13
  • Step 2: Substitute: 1 × 1.057001e-13
  • Step 3: Result: 1.057001e-13 ly
So, 1 km = 1.057001e-13 ly.

About the Units

Kilometer (km)

One Kilometer (km) equals 1.057001e-13 Light-Year (ly)

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

Light-Year (ly)

One Light-Year (ly) equals 9.460730e+12 Kilometer (km)

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

Where This Conversion Is Used

  • Converting values from Kilometer to Light-Year for engineering or scientific workflows.
  • Used when normalizing mixed-unit datasets requiring consistent Light-Year 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 Light-Year (ly) are in 1 Kilometer (km)?

1 km = 1.057001e-13 ly.

What is the formula for converting Kilometer (km) to Light-Year (ly)?

Multiply the km value by 1.057001e-13.

Can I reverse the conversion?

Yes. 1 ly = 9.460730e+12 km.

Conclusion

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

Quick Links for Unit Converters

Convert Kilometer to Other Units

Kilometer to Inch

1 km = 39370.078740157485 in

1 Kilometer (km) = 39370.078740157485 Inches (in)

1 kilometer equals 39370.078740157485 inches.

Kilometer to Foot

1 km = 3280.839895013123 ft

1 Kilometer (km) = 3280.839895013123 Feet (ft)

1 kilometer equals 3280.839895013123 feet.

Kilometer to Feet

1 km = 3280.839895013123 ft

1 Kilometer (km) = 3280.839895013123 Feets (ft)

1 kilometer equals 3280.839895013123 feets.

Kilometer to Centimeter

1 km = 100000 cm

1 Kilometer (km) = 100000 Centimeters (cm)

1 kilometer equals 100000 centimeters.

Kilometer to Meter

1 km = 1000 m

1 Kilometer (km) = 1000 Meters (m)

1 kilometer equals 1000 meters.

Kilometer to Millimeter

1 km = 1000000 mm

1 Kilometer (km) = 1000000 Millimeters (mm)

1 kilometer equals 1000000 millimeters.

Kilometer to Yard

1 km = 1093.6132983377079 yd

1 Kilometer (km) = 1093.6132983377079 Yards (yd)

1 kilometer equals 1093.6132983377079 yards.

Kilometer to Yoctometer

1 km = 1e+27 ym

1 Kilometer (km) = 1e+27 Yoctometers (ym)

1 kilometer equals 1e+27 yoctometers.

Kilometer to Zeptometer

1 km = 1.0000000000000001e+24 zm

1 Kilometer (km) = 1.0000000000000001e+24 Zeptometers (zm)

1 kilometer equals 1.0000000000000001e+24 zeptometers.

Kilometer to Attometer

1 km = 999999999999999900000 am

1 Kilometer (km) = 999999999999999900000 Attometers (am)

1 kilometer equals 999999999999999900000 attometers.

Kilometer to Femtometer

1 km = 999999999999999900 fm

1 Kilometer (km) = 999999999999999900 Femtometers (fm)

1 kilometer equals 999999999999999900 femtometers.

Kilometer to Picometer

1 km = 1000000000000000 pm

1 Kilometer (km) = 1000000000000000 Picometers (pm)

1 kilometer equals 1000000000000000 picometers.

Kilometer to Nanometer

1 km = 999999999999.9999 nm

1 Kilometer (km) = 999999999999.9999 Nanometers (nm)

1 kilometer equals 999999999999.9999 nanometers.

Kilometer to Micrometer

1 km = 1000000000 µm

1 Kilometer (km) = 1000000000 Micrometers (µm)

1 kilometer equals 1000000000 micrometers.

Kilometer to Decimeter

1 km = 10000 dm

1 Kilometer (km) = 10000 Decimeters (dm)

1 kilometer equals 10000 decimeters.

Kilometer to Decameter

1 km = 100 dam

1 Kilometer (km) = 100 Decameters (dam)

1 kilometer equals 100 decameters.

Kilometer to Hectometer

1 km = 10 hm

1 Kilometer (km) = 10 Hectometers (hm)

1 kilometer equals 10 hectometers.

Kilometer to Megameter

1 km = 0.001 Mm

1 Kilometer (km) = 0.001 Megameter (Mm)

1 kilometer equals 0.001 megameter.

Kilometer to Gigameter

1 km = 0.000001 Gm

1 Kilometer (km) = 0.000001 Gigameter (Gm)

1 kilometer equals 0.000001 gigameter.

Kilometer to Terameter

1 km = 1e-9 Tm

1 Kilometer (km) = 1e-9 Terameter (Tm)

1 kilometer equals 1e-9 terameter.

Kilometer to Petameter

1 km = 1e-12 Pm

1 Kilometer (km) = 1e-12 Petameter (Pm)

1 kilometer equals 1e-12 petameter.

Kilometer to Exameter

1 km = 1e-15 Em

1 Kilometer (km) = 1e-15 Exameter (Em)

1 kilometer equals 1e-15 exameter.

Kilometer to Zettameter

1 km = 1e-18 Zm

1 Kilometer (km) = 1e-18 Zettameter (Zm)

1 kilometer equals 1e-18 zettameter.

Kilometer to Yottameter

1 km = 1.0000000000000001e-21 Ym

1 Kilometer (km) = 1.0000000000000001e-21 Yottameter (Ym)

1 kilometer equals 1.0000000000000001e-21 yottameter.

Kilometer to Cubit

1 km = 2187.2265966754157 cubit

1 Kilometer (km) = 2187.2265966754157 Cubits (cubit)

1 kilometer equals 2187.2265966754157 cubits.

Kilometer to Span

1 km = 4374.4531933508315 span

1 Kilometer (km) = 4374.4531933508315 Spans (span)

1 kilometer equals 4374.4531933508315 spans.

Kilometer to Hand

1 km = 9842.519685039371 hh

1 Kilometer (km) = 9842.519685039371 Hands (hh)

1 kilometer equals 9842.519685039371 hands.

Kilometer to Palm

1 km = 13123.359580052493 palm

1 Kilometer (km) = 13123.359580052493 Palms (palm)

1 kilometer equals 13123.359580052493 palms.

Kilometer to Digit

1 km = 52493.43832020997 digit

1 Kilometer (km) = 52493.43832020997 Digits (digit)

1 kilometer equals 52493.43832020997 digits.

Kilometer to Link

1 km = 4970.969537898672 link

1 Kilometer (km) = 4970.969537898672 Links (link)

1 kilometer equals 4970.969537898672 links.

Kilometer to Ell

1 km = 874.8906386701663 ell

1 Kilometer (km) = 874.8906386701663 Ells (ell)

1 kilometer equals 874.8906386701663 ells.

Kilometer to Barleycorn

1 km = 118063.75442739078 barleycorn

1 Kilometer (km) = 118063.75442739078 Barleycorns (barleycorn)

1 kilometer equals 118063.75442739078 barleycorns.

Kilometer to Astronomical Unit

1 km = 6.684587122268446e-9 AU

1 Kilometer (km) = 6.684587122268446e-9 Astronomical Unit (AU)

1 kilometer equals 6.684587122268446e-9 Astronomicalunit.

Kilometer to Light-Second

1 km = 0.0000033356409519815205 ls

1 Kilometer (km) = 0.0000033356409519815205 Light-Second (ls)

1 kilometer equals 0.0000033356409519815205 Light-Second.

Kilometer to Light-Minute

1 km = 5.5594015866358675e-8 lm

1 Kilometer (km) = 5.5594015866358675e-8 Light-Minute (lm)

1 kilometer equals 5.5594015866358675e-8 Light-Minute.

Kilometer to Light-Hour

1 km = 9.265669309342727e-10 lh

1 Kilometer (km) = 9.265669309342727e-10 Light-Hour (lh)

1 kilometer equals 9.265669309342727e-10 Light-Hour.

Kilometer to Light-Day

1 km = 3.8606955464537675e-11 ld

1 Kilometer (km) = 3.8606955464537675e-11 Light-Day (ld)

1 kilometer equals 3.8606955464537675e-11 Light-Day.

Kilometer to Light-Year

1 km = 1.0570008340246155e-13 ly

1 Kilometer (km) = 1.0570008340246155e-13 Light-Year (ly)

1 kilometer equals 1.0570008340246155e-13 Light-Year.

Kilometer to Parsec

1 km = 3.2407792894443624e-14 pc

1 Kilometer (km) = 3.2407792894443624e-14 Parsec (pc)

1 kilometer equals 3.2407792894443624e-14 Parsec.

Kilometer to Kiloparsec

1 km = 3.240779289444362e-17 kpc

1 Kilometer (km) = 3.240779289444362e-17 Kiloparsec (kpc)

1 kilometer equals 3.240779289444362e-17 Kiloparsec.

Kilometer to Megaparsec

1 km = 3.240779289444362e-20 Mpc

1 Kilometer (km) = 3.240779289444362e-20 Megaparsec (Mpc)

1 kilometer equals 3.240779289444362e-20 Megaparsec.

Kilometer to Gigaparsec

1 km = 3.2407792894443625e-23 Gpc

1 Kilometer (km) = 3.2407792894443625e-23 Gigaparsec (Gpc)

1 kilometer equals 3.2407792894443625e-23 Gigaparsec.

Kilometer to Nautical Mile

1 km = 0.5399568034557235 NM

1 Kilometer (km) = 0.5399568034557235 Nautical Mile (NM)

1 kilometer equals 0.5399568034557235 Nautical Mile.

Kilometer to Fathom

1 km = 546.8066491688539 ftm

1 Kilometer (km) = 546.8066491688539 Fathoms (ftm)

1 kilometer equals 546.8066491688539 fathoms.

Kilometer to Cable Length

1 km = 4.556722076407116 cable

1 Kilometer (km) = 4.556722076407116 Cable Lengths (cable)

1 kilometer equals 4.556722076407116 Cable Length s.

Kilometer to Nautical League

1 km = 0.17998560115190784 NL

1 Kilometer (km) = 0.17998560115190784 Nautical League (NL)

1 kilometer equals 0.17998560115190784 Nautical League.

Kilometer to Thou

1 km = 39370078.74015748 mil

1 Kilometer (km) = 39370078.74015748 Thous (mil)

1 kilometer equals 39370078.74015748 thous.

Kilometer to Rod

1 km = 198.83878151594686 rd

1 Kilometer (km) = 198.83878151594686 Rods (rd)

1 kilometer equals 198.83878151594686 rods.

Kilometer to Chain

1 km = 49.709695378986716 ch

1 Kilometer (km) = 49.709695378986716 Chains (ch)

1 kilometer equals 49.709695378986716 chains.

Kilometer to Furlong

1 km = 4.970969537898672 fur

1 Kilometer (km) = 4.970969537898672 Furlongs (fur)

1 kilometer equals 4.970969537898672 furlongs.

Kilometer to Mile

1 km = 0.621371192237334 mi

1 Kilometer (km) = 0.621371192237334 Mile (mi)

1 kilometer equals 0.621371192237334 mile.

Kilometer to League

1 km = 0.20712373074577797 lea

1 Kilometer (km) = 0.20712373074577797 League (lea)

1 kilometer equals 0.20712373074577797 league.

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.