| light-year | 1 ly | 2 ly | 3 ly | 4 ly | 5 ly | 6 ly | 7 ly | 8 ly | 9 ly | 10 ly | 11 ly | 12 ly | 13 ly | 14 ly | 15 ly | 16 ly | 17 ly | 18 ly | 19 ly | 20 ly | 21 ly | 22 ly | 23 ly | 24 ly | 25 ly | 26 ly | 27 ly | 28 ly | 29 ly | 30 ly | 31 ly | 32 ly | 33 ly | 34 ly | 35 ly | 36 ly | 37 ly | 38 ly | 39 ly | 40 ly | 41 ly | 42 ly | 43 ly | 44 ly | 45 ly | 46 ly | 47 ly | 48 ly | 49 ly | 50 ly | 51 ly | 52 ly | 53 ly | 54 ly | 55 ly | 56 ly | 57 ly | 58 ly | 59 ly | 60 ly | 61 ly | 62 ly | 63 ly | 64 ly | 65 ly | 66 ly | 67 ly | 68 ly | 69 ly | 70 ly | 71 ly | 72 ly | 73 ly | 74 ly | 75 ly | 76 ly | 77 ly | 78 ly | 79 ly | 80 ly | 81 ly | 82 ly | 83 ly | 84 ly | 85 ly | 86 ly | 87 ly | 88 ly | 89 ly | 90 ly | 91 ly | 92 ly | 93 ly | 94 ly | 95 ly | 96 ly | 97 ly | 98 ly | 99 ly | 100 ly |
| fathom | 5.1730798364389 × 1015 ftm | 1.0346159672878 × 1016 ftm | 1.5519239509317 × 1016 ftm | 2.0692319345755 × 1016 ftm | 2.5865399182194 × 1016 ftm | 3.1038479018633 × 1016 ftm | 3.6211558855072 × 1016 ftm | 4.1384638691511 × 1016 ftm | 4.655771852795 × 1016 ftm | 5.1730798364389 × 1016 ftm | 5.6903878200828 × 1016 ftm | 6.2076958037266 × 1016 ftm | 6.7250037873705 × 1016 ftm | 7.2423117710144 × 1016 ftm | 7.7596197546583 × 1016 ftm | 8.2769277383022 × 1016 ftm | 8.7942357219461 × 1016 ftm | 9.31154370559 × 1016 ftm | 9.8288516892338 × 1016 ftm | 1.0346159672878 × 1017 ftm | 1.0863467656522 × 1017 ftm | 1.1380775640166 × 1017 ftm | 1.1898083623809 × 1017 ftm | 1.2415391607453 × 1017 ftm | 1.2932699591097 × 1017 ftm | 1.3450007574741 × 1017 ftm | 1.3967315558385 × 1017 ftm | 1.4484623542029 × 1017 ftm | 1.5001931525673 × 1017 ftm | 1.5519239509317 × 1017 ftm | 1.603654749296 × 1017 ftm | 1.6553855476604 × 1017 ftm | 1.7071163460248 × 1017 ftm | 1.7588471443892 × 1017 ftm | 1.8105779427536 × 1017 ftm | 1.862308741118 × 1017 ftm | 1.9140395394824 × 1017 ftm | 1.9657703378468 × 1017 ftm | 2.0175011362112 × 1017 ftm | 2.0692319345755 × 1017 ftm | 2.1209627329399 × 1017 ftm | 2.1726935313043 × 1017 ftm | 2.2244243296687 × 1017 ftm | 2.2761551280331 × 1017 ftm | 2.3278859263975 × 1017 ftm | 2.3796167247619 × 1017 ftm | 2.4313475231263 × 1017 ftm | 2.4830783214907 × 1017 ftm | 2.534809119855 × 1017 ftm | 2.5865399182194 × 1017 ftm | 2.6382707165838 × 1017 ftm | 2.6900015149482 × 1017 ftm | 2.7417323133126 × 1017 ftm | 2.793463111677 × 1017 ftm | 2.8451939100414 × 1017 ftm | 2.8969247084058 × 1017 ftm | 2.9486555067702 × 1017 ftm | 3.0003863051345 × 1017 ftm | 3.0521171034989 × 1017 ftm | 3.1038479018633 × 1017 ftm | 3.1555787002277 × 1017 ftm | 3.2073094985921 × 1017 ftm | 3.2590402969565 × 1017 ftm | 3.3107710953209 × 1017 ftm | 3.3625018936853 × 1017 ftm | 3.4142326920497 × 1017 ftm | 3.465963490414 × 1017 ftm | 3.5176942887784 × 1017 ftm | 3.5694250871428 × 1017 ftm | 3.6211558855072 × 1017 ftm | 3.6728866838716 × 1017 ftm | 3.724617482236 × 1017 ftm | 3.7763482806004 × 1017 ftm | 3.8280790789648 × 1017 ftm | 3.8798098773292 × 1017 ftm | 3.9315406756935 × 1017 ftm | 3.9832714740579 × 1017 ftm | 4.0350022724223 × 1017 ftm | 4.0867330707867 × 1017 ftm | 4.1384638691511 × 1017 ftm | 4.1901946675155 × 1017 ftm | 4.2419254658799 × 1017 ftm | 4.2936562642443 × 1017 ftm | 4.3453870626086 × 1017 ftm | 4.397117860973 × 1017 ftm | 4.4488486593374 × 1017 ftm | 4.5005794577018 × 1017 ftm | 4.5523102560662 × 1017 ftm | 4.6040410544306 × 1017 ftm | 4.655771852795 × 1017 ftm | 4.7075026511594 × 1017 ftm | 4.7592334495238 × 1017 ftm | 4.8109642478881 × 1017 ftm | 4.8626950462525 × 1017 ftm | 4.9144258446169 × 1017 ftm | 4.9661566429813 × 1017 ftm | 5.0178874413457 × 1017 ftm | 5.0696182397101 × 1017 ftm | 5.1213490380745 × 1017 ftm | 5.1730798364389 × 1017 ftm |
The light-year is a unit of length used to express astronomical distances. It is about 9.5 quadrillion metres or 5.9 trillion miles. As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in vacuum in one Julian year (365.25 days). Because it includes the word "year", the term light-year is sometimes misinterpreted as a unit of time.
| 1 light-years = 5.1730798364389E+15 fathoms | 4 light-years = 2.0692319345755E+16 fathoms |
| 1.5 light-years = 7.7596197546583E+15 fathoms | 4.5 light-years = 2.3278859263975E+16 fathoms |
| 2 light-years = 1.0346159672878E+16 fathoms | 5 light-years = 2.5865399182194E+16 fathoms |
| 2.5 light-years = 1.2932699591097E+16 fathoms | 5.5 light-years = 2.8451939100414E+16 fathoms |
| 3 light-years = 1.5519239509317E+16 fathoms | 6 light-years = 3.1038479018633E+16 fathoms |
A fathom is a unit of length in the imperial and the U.S. customary systems equal to 6 feet (1.8288 metres), used especially for measuring the depth of water.
There are two yards (6 feet) in an imperial fathom. Originally the span of a man's outstretched arms, the size of a fathom has varied slightly depending on whether it was defined as a thousandth of an (Admiralty) nautical mile or as a multiple of the imperial yard. Formerly, the term was used for any of several units of length varying around 5–5 1⁄2 feet.
| 1 fathoms = 1.9330844131886E-16 light-years | 4 fathoms = 7.7323376527542E-16 light-years |
| 1.5 fathoms = 2.8996266197828E-16 light-years | 4.5 fathoms = 8.6988798593485E-16 light-years |
| 2 fathoms = 3.8661688263771E-16 light-years | 5 fathoms = 9.6654220659428E-16 light-years |
| 2.5 fathoms = 4.8327110329714E-16 light-years | 5.5 fathoms = 1.0631964272537E-15 light-years |
| 3 fathoms = 5.7992532395657E-16 light-years | 6 fathoms = 1.1598506479131E-15 light-years |
| 1 light-years = 5.1730798364389 × 1015 fathoms |
| 1 fathoms = 1.9330844131886 × 10-16 light-years |