fathom | 1 ftm | 2 ftm | 3 ftm | 4 ftm | 5 ftm | 6 ftm | 7 ftm | 8 ftm | 9 ftm | 10 ftm | 11 ftm | 12 ftm | 13 ftm | 14 ftm | 15 ftm | 16 ftm | 17 ftm | 18 ftm | 19 ftm | 20 ftm | 21 ftm | 22 ftm | 23 ftm | 24 ftm | 25 ftm | 26 ftm | 27 ftm | 28 ftm | 29 ftm | 30 ftm | 31 ftm | 32 ftm | 33 ftm | 34 ftm | 35 ftm | 36 ftm | 37 ftm | 38 ftm | 39 ftm | 40 ftm | 41 ftm | 42 ftm | 43 ftm | 44 ftm | 45 ftm | 46 ftm | 47 ftm | 48 ftm | 49 ftm | 50 ftm | 51 ftm | 52 ftm | 53 ftm | 54 ftm | 55 ftm | 56 ftm | 57 ftm | 58 ftm | 59 ftm | 60 ftm | 61 ftm | 62 ftm | 63 ftm | 64 ftm | 65 ftm | 66 ftm | 67 ftm | 68 ftm | 69 ftm | 70 ftm | 71 ftm | 72 ftm | 73 ftm | 74 ftm | 75 ftm | 76 ftm | 77 ftm | 78 ftm | 79 ftm | 80 ftm | 81 ftm | 82 ftm | 83 ftm | 84 ftm | 85 ftm | 86 ftm | 87 ftm | 88 ftm | 89 ftm | 90 ftm | 91 ftm | 92 ftm | 93 ftm | 94 ftm | 95 ftm | 96 ftm | 97 ftm | 98 ftm | 99 ftm | 100 ftm |
light-year | 1.9330844131886 × 10-16 ly | 3.8661688263771 × 10-16 ly | 5.7992532395657 × 10-16 ly | 7.7323376527542 × 10-16 ly | 9.6654220659428 × 10-16 ly | 1.1598506479131 × 10-15 ly | 1.353159089232 × 10-15 ly | 1.5464675305508 × 10-15 ly | 1.7397759718697 × 10-15 ly | 1.9330844131886 × 10-15 ly | 2.1263928545074 × 10-15 ly | 2.3197012958263 × 10-15 ly | 2.5130097371451 × 10-15 ly | 2.706318178464 × 10-15 ly | 2.8996266197828 × 10-15 ly | 3.0929350611017 × 10-15 ly | 3.2862435024206 × 10-15 ly | 3.4795519437394 × 10-15 ly | 3.6728603850583 × 10-15 ly | 3.8661688263771 × 10-15 ly | 4.059477267696 × 10-15 ly | 4.2527857090148 × 10-15 ly | 4.4460941503337 × 10-15 ly | 4.6394025916525 × 10-15 ly | 4.8327110329714 × 10-15 ly | 5.0260194742903 × 10-15 ly | 5.2193279156091 × 10-15 ly | 5.412636356928 × 10-15 ly | 5.6059447982468 × 10-15 ly | 5.7992532395657 × 10-15 ly | 5.9925616808845 × 10-15 ly | 6.1858701222034 × 10-15 ly | 6.3791785635222 × 10-15 ly | 6.5724870048411 × 10-15 ly | 6.76579544616 × 10-15 ly | 6.9591038874788 × 10-15 ly | 7.1524123287977 × 10-15 ly | 7.3457207701165 × 10-15 ly | 7.5390292114354 × 10-15 ly | 7.7323376527542 × 10-15 ly | 7.9256460940731 × 10-15 ly | 8.118954535392 × 10-15 ly | 8.3122629767108 × 10-15 ly | 8.5055714180297 × 10-15 ly | 8.6988798593485 × 10-15 ly | 8.8921883006674 × 10-15 ly | 9.0854967419862 × 10-15 ly | 9.2788051833051 × 10-15 ly | 9.4721136246239 × 10-15 ly | 9.6654220659428 × 10-15 ly | 9.8587305072617 × 10-15 ly | 1.0052038948581 × 10-14 ly | 1.0245347389899 × 10-14 ly | 1.0438655831218 × 10-14 ly | 1.0631964272537 × 10-14 ly | 1.0825272713856 × 10-14 ly | 1.1018581155175 × 10-14 ly | 1.1211889596494 × 10-14 ly | 1.1405198037813 × 10-14 ly | 1.1598506479131 × 10-14 ly | 1.179181492045 × 10-14 ly | 1.1985123361769 × 10-14 ly | 1.2178431803088 × 10-14 ly | 1.2371740244407 × 10-14 ly | 1.2565048685726 × 10-14 ly | 1.2758357127044 × 10-14 ly | 1.2951665568363 × 10-14 ly | 1.3144974009682 × 10-14 ly | 1.3338282451001 × 10-14 ly | 1.353159089232 × 10-14 ly | 1.3724899333639 × 10-14 ly | 1.3918207774958 × 10-14 ly | 1.4111516216276 × 10-14 ly | 1.4304824657595 × 10-14 ly | 1.4498133098914 × 10-14 ly | 1.4691441540233 × 10-14 ly | 1.4884749981552 × 10-14 ly | 1.5078058422871 × 10-14 ly | 1.527136686419 × 10-14 ly | 1.5464675305508 × 10-14 ly | 1.5657983746827 × 10-14 ly | 1.5851292188146 × 10-14 ly | 1.6044600629465 × 10-14 ly | 1.6237909070784 × 10-14 ly | 1.6431217512103 × 10-14 ly | 1.6624525953422 × 10-14 ly | 1.681783439474 × 10-14 ly | 1.7011142836059 × 10-14 ly | 1.7204451277378 × 10-14 ly | 1.7397759718697 × 10-14 ly | 1.7591068160016 × 10-14 ly | 1.7784376601335 × 10-14 ly | 1.7977685042654 × 10-14 ly | 1.8170993483972 × 10-14 ly | 1.8364301925291 × 10-14 ly | 1.855761036661 × 10-14 ly | 1.8750918807929 × 10-14 ly | 1.8944227249248 × 10-14 ly | 1.9137535690567 × 10-14 ly | 1.9330844131886 × 10-14 ly |
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.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
fathom | ftm | ≡ 6 ft | = 1.8288 m | Imperial/US |
fathoms | light-years | fathoms | light-years |
---|---|---|---|
1 | = 1.9330844131886E-16 | 4 | = 7.7323376527542E-16 |
1.5 | = 2.8996266197828E-16 | 4.5 | = 8.6988798593485E-16 |
2 | = 3.8661688263771E-16 | 5 | = 9.6654220659428E-16 |
2.5 | = 4.8327110329714E-16 | 5.5 | = 1.0631964272537E-15 |
3 | = 5.7992532395657E-16 | 6 | = 1.1598506479131E-15 |
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.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
light-year | ly | ≡ Distance light travels in vacuum in 365.25 days | = 9.4607304725808×1015 m | Science - Astronomy (Length) |
light-years | fathoms | light-years | fathoms |
---|---|---|---|
1 | = 5.1730798364389E+15 | 4 | = 2.0692319345755E+16 |
1.5 | = 7.7596197546583E+15 | 4.5 | = 2.3278859263975E+16 |
2 | = 1.0346159672878E+16 | 5 | = 2.5865399182194E+16 |
2.5 | = 1.2932699591097E+16 | 5.5 | = 2.8451939100414E+16 |
3 | = 1.5519239509317E+16 | 6 | = 3.1038479018633E+16 |
fathoms | light-years |
---|---|
1 | = 1.9330844131886 × 10-16 |
5.1730798364389 × 1015 | = 1 |
Symbol | Definition |
---|---|
≡ | exactly equal |
≈ | approximately equal to |
= | equal to |
digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |