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 |
foot, metric (long) | 5.4864 lmf | 10.9728 lmf | 16.4592 lmf | 21.9456 lmf | 27.432 lmf | 32.9184 lmf | 38.4048 lmf | 43.8912 lmf | 49.3776 lmf | 54.864 lmf | 60.3504 lmf | 65.8368 lmf | 71.3232 lmf | 76.8096 lmf | 82.296 lmf | 87.7824 lmf | 93.2688 lmf | 98.7552 lmf | 104.2416 lmf | 109.728 lmf | 115.2144 lmf | 120.7008 lmf | 126.1872 lmf | 131.6736 lmf | 137.16 lmf | 142.6464 lmf | 148.1328 lmf | 153.6192 lmf | 159.1056 lmf | 164.592 lmf | 170.0784 lmf | 175.5648 lmf | 181.0512 lmf | 186.5376 lmf | 192.024 lmf | 197.5104 lmf | 202.9968 lmf | 208.4832 lmf | 213.9696 lmf | 219.456 lmf | 224.9424 lmf | 230.4288 lmf | 235.9152 lmf | 241.4016 lmf | 246.888 lmf | 252.3744 lmf | 257.8608 lmf | 263.3472 lmf | 268.8336 lmf | 274.32 lmf | 279.8064 lmf | 285.2928 lmf | 290.7792 lmf | 296.2656 lmf | 301.752 lmf | 307.2384 lmf | 312.7248 lmf | 318.2112 lmf | 323.6976 lmf | 329.184 lmf | 334.6704 lmf | 340.1568 lmf | 345.6432 lmf | 351.1296 lmf | 356.616 lmf | 362.1024 lmf | 367.5888 lmf | 373.0752 lmf | 378.5616 lmf | 384.048 lmf | 389.5344 lmf | 395.0208 lmf | 400.5072 lmf | 405.9936 lmf | 411.48 lmf | 416.9664 lmf | 422.4528 lmf | 427.9392 lmf | 433.4256 lmf | 438.912 lmf | 444.3984 lmf | 449.8848 lmf | 455.3712 lmf | 460.8576 lmf | 466.344 lmf | 471.8304 lmf | 477.3168 lmf | 482.8032 lmf | 488.2896 lmf | 493.776 lmf | 499.2624 lmf | 504.7488 lmf | 510.2352 lmf | 515.7216 lmf | 521.208 lmf | 526.6944 lmf | 532.1808 lmf | 537.6672 lmf | 543.1536 lmf | 548.64 lmf |
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 | feet, metric (long) | fathoms | feet, metric (long) |
---|---|---|---|
1 | = 5.4864 | 4 | = 21.9456 |
1.5 | = 8.2296 | 4.5 | = 24.6888 |
2 | = 10.9728 | 5 | = 27.432 |
2.5 | = 13.716 | 5.5 | = 30.1752 |
3 | = 16.4592 | 6 | = 32.9184 |
A foot, metric (long) is the unit of length.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
foot, metric (long) | lmf | ≡ 1⁄3 m | ≈ 0.3 m | Metric system SI |
feet, metric (long) | fathoms | feet, metric (long) | fathoms |
---|---|---|---|
1 | = 0.18226888305628 | 4 | = 0.72907553222514 |
1.5 | = 0.27340332458443 | 4.5 | = 0.82020997375328 |
2 | = 0.36453776611257 | 5 | = 0.91134441528142 |
2.5 | = 0.45567220764071 | 5.5 | = 1.0024788568096 |
3 | = 0.54680664916885 | 6 | = 1.0936132983377 |
fathoms | feet, metric (long) |
---|---|
1 | = 5.4864 |
0.1822689 | = 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 …) |