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 |
earth radius | 2.8705069847748 × 10-7R⊕ | 5.7410139695495 × 10-7R⊕ | 8.6115209543243 × 10-7R⊕ | 1.1482027939099 × 10-6R⊕ | 1.4352534923874 × 10-6R⊕ | 1.7223041908649 × 10-6R⊕ | 2.0093548893423 × 10-6R⊕ | 2.2964055878198 × 10-6R⊕ | 2.5834562862973 × 10-6R⊕ | 2.8705069847748 × 10-6R⊕ | 3.1575576832522 × 10-6R⊕ | 3.4446083817297 × 10-6R⊕ | 3.7316590802072 × 10-6R⊕ | 4.0187097786847 × 10-6R⊕ | 4.3057604771621 × 10-6R⊕ | 4.5928111756396 × 10-6R⊕ | 4.8798618741171 × 10-6R⊕ | 5.1669125725946 × 10-6R⊕ | 5.453963271072 × 10-6R⊕ | 5.7410139695495 × 10-6R⊕ | 6.028064668027 × 10-6R⊕ | 6.3151153665045 × 10-6R⊕ | 6.6021660649819 × 10-6R⊕ | 6.8892167634594 × 10-6R⊕ | 7.1762674619369 × 10-6R⊕ | 7.4633181604144 × 10-6R⊕ | 7.7503688588919 × 10-6R⊕ | 8.0374195573693 × 10-6R⊕ | 8.3244702558468 × 10-6R⊕ | 8.6115209543243 × 10-6R⊕ | 8.8985716528018 × 10-6R⊕ | 9.1856223512792 × 10-6R⊕ | 9.4726730497567 × 10-6R⊕ | 9.7597237482342 × 10-6R⊕ | 1.0046774446712 × 10-5R⊕ | 1.0333825145189 × 10-5R⊕ | 1.0620875843667 × 10-5R⊕ | 1.0907926542144 × 10-5R⊕ | 1.1194977240622 × 10-5R⊕ | 1.1482027939099 × 10-5R⊕ | 1.1769078637577 × 10-5R⊕ | 1.2056129336054 × 10-5R⊕ | 1.2343180034531 × 10-5R⊕ | 1.2630230733009 × 10-5R⊕ | 1.2917281431486 × 10-5R⊕ | 1.3204332129964 × 10-5R⊕ | 1.3491382828441 × 10-5R⊕ | 1.3778433526919 × 10-5R⊕ | 1.4065484225396 × 10-5R⊕ | 1.4352534923874 × 10-5R⊕ | 1.4639585622351 × 10-5R⊕ | 1.4926636320829 × 10-5R⊕ | 1.5213687019306 × 10-5R⊕ | 1.5500737717784 × 10-5R⊕ | 1.5787788416261 × 10-5R⊕ | 1.6074839114739 × 10-5R⊕ | 1.6361889813216 × 10-5R⊕ | 1.6648940511694 × 10-5R⊕ | 1.6935991210171 × 10-5R⊕ | 1.7223041908649 × 10-5R⊕ | 1.7510092607126 × 10-5R⊕ | 1.7797143305604 × 10-5R⊕ | 1.8084194004081 × 10-5R⊕ | 1.8371244702558 × 10-5R⊕ | 1.8658295401036 × 10-5R⊕ | 1.8945346099513 × 10-5R⊕ | 1.9232396797991 × 10-5R⊕ | 1.9519447496468 × 10-5R⊕ | 1.9806498194946 × 10-5R⊕ | 2.0093548893423 × 10-5R⊕ | 2.0380599591901 × 10-5R⊕ | 2.0667650290378 × 10-5R⊕ | 2.0954700988856 × 10-5R⊕ | 2.1241751687333 × 10-5R⊕ | 2.1528802385811 × 10-5R⊕ | 2.1815853084288 × 10-5R⊕ | 2.2102903782766 × 10-5R⊕ | 2.2389954481243 × 10-5R⊕ | 2.2677005179721 × 10-5R⊕ | 2.2964055878198 × 10-5R⊕ | 2.3251106576676 × 10-5R⊕ | 2.3538157275153 × 10-5R⊕ | 2.3825207973631 × 10-5R⊕ | 2.4112258672108 × 10-5R⊕ | 2.4399309370585 × 10-5R⊕ | 2.4686360069063 × 10-5R⊕ | 2.497341076754 × 10-5R⊕ | 2.5260461466018 × 10-5R⊕ | 2.5547512164495 × 10-5R⊕ | 2.5834562862973 × 10-5R⊕ | 2.612161356145 × 10-5R⊕ | 2.6408664259928 × 10-5R⊕ | 2.6695714958405 × 10-5R⊕ | 2.6982765656883 × 10-5R⊕ | 2.726981635536 × 10-5R⊕ | 2.7556867053838 × 10-5R⊕ | 2.7843917752315 × 10-5R⊕ | 2.8130968450793 × 10-5R⊕ | 2.841801914927 × 10-5R⊕ | 2.8705069847748 × 10-5R⊕ |
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 | earth radius | fathoms | earth radius |
---|---|---|---|
1 | ≈ 2.8705069847748E-7 | 4 | ≈ 1.1482027939099E-6 |
1.5 | ≈ 4.3057604771621E-7 | 4.5 | ≈ 1.2917281431486E-6 |
2 | ≈ 5.7410139695495E-7 | 5 | ≈ 1.4352534923874E-6 |
2.5 | ≈ 7.1762674619369E-7 | 5.5 | ≈ 1.5787788416261E-6 |
3 | ≈ 8.6115209543243E-7 | 6 | ≈ 1.7223041908649E-6 |
Earth radius is the distance from Earth's center to its surface, about 6,371 km (3,959 mi). This length is also used as a unit of distance, especially in astronomy and geology, where it is usually denoted by R⊕.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
earth radius | R⊕ | ≈ 6,371 km | ≈ 6,371 km | Science - Astronomy (Length) |
earth radius | fathoms | earth radius | fathoms |
---|---|---|---|
1 | ≈ 3483705.1618548 | 4 | ≈ 13934820.647419 |
1.5 | ≈ 5225557.7427822 | 4.5 | ≈ 15676673.228346 |
2 | ≈ 6967410.3237095 | 5 | ≈ 17418525.809274 |
2.5 | ≈ 8709262.9046369 | 5.5 | ≈ 19160378.390201 |
3 | ≈ 10451115.485564 | 6 | ≈ 20902230.971129 |
fathoms | earth radius |
---|---|
1 | ≈ 2.8705069847748 × 10-7 |
3,483,705.1618548 | ≈ 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 …) |