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 (short) | 6.096 smf | 12.192 smf | 18.288 smf | 24.384 smf | 30.48 smf | 36.576 smf | 42.672 smf | 48.768 smf | 54.864 smf | 60.96 smf | 67.056 smf | 73.152 smf | 79.248 smf | 85.344 smf | 91.44 smf | 97.536 smf | 103.632 smf | 109.728 smf | 115.824 smf | 121.92 smf | 128.016 smf | 134.112 smf | 140.208 smf | 146.304 smf | 152.4 smf | 158.496 smf | 164.592 smf | 170.688 smf | 176.784 smf | 182.88 smf | 188.976 smf | 195.072 smf | 201.168 smf | 207.264 smf | 213.36 smf | 219.456 smf | 225.552 smf | 231.648 smf | 237.744 smf | 243.84 smf | 249.936 smf | 256.032 smf | 262.128 smf | 268.224 smf | 274.32 smf | 280.416 smf | 286.512 smf | 292.608 smf | 298.704 smf | 304.8 smf | 310.896 smf | 316.992 smf | 323.088 smf | 329.184 smf | 335.28 smf | 341.376 smf | 347.472 smf | 353.568 smf | 359.664 smf | 365.76 smf | 371.856 smf | 377.952 smf | 384.048 smf | 390.144 smf | 396.24 smf | 402.336 smf | 408.432 smf | 414.528 smf | 420.624 smf | 426.72 smf | 432.816 smf | 438.912 smf | 445.008 smf | 451.104 smf | 457.2 smf | 463.296 smf | 469.392 smf | 475.488 smf | 481.584 smf | 487.68 smf | 493.776 smf | 499.872 smf | 505.968 smf | 512.064 smf | 518.16 smf | 524.256 smf | 530.352 smf | 536.448 smf | 542.544 smf | 548.64 smf | 554.736 smf | 560.832 smf | 566.928 smf | 573.024 smf | 579.12 smf | 585.216 smf | 591.312 smf | 597.408 smf | 603.504 smf | 609.6 smf |
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 (short) | fathoms | feet, metric (short) |
---|---|---|---|
1 | = 6.096 | 4 | = 24.384 |
1.5 | = 9.144 | 4.5 | = 27.432 |
2 | = 12.192 | 5 | = 30.48 |
2.5 | = 15.24 | 5.5 | = 33.528 |
3 | = 18.288 | 6 | = 36.576 |
≡ 0.30 m
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
foot, metric (short) | smf | ≡ 0.30 m | ≡ 0.30 m | Metric system SI |
feet, metric (short) | fathoms | feet, metric (short) | fathoms |
---|---|---|---|
1 | = 0.16404199475066 | 4 | = 0.65616797900262 |
1.5 | = 0.24606299212598 | 4.5 | = 0.73818897637795 |
2 | = 0.32808398950131 | 5 | = 0.82020997375328 |
2.5 | = 0.41010498687664 | 5.5 | = 0.90223097112861 |
3 | = 0.49212598425197 | 6 | = 0.98425196850394 |
fathoms | feet, metric (short) |
---|---|
1 | = 6.096 |
0.1640420 | = 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 …) |