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 |
inch | 72 in | 144 in | 216 in | 288 in | 360 in | 432 in | 504 in | 576 in | 648 in | 720 in | 792 in | 864 in | 936 in | 1 008 in | 1 080 in | 1 152 in | 1 224 in | 1 296 in | 1 368 in | 1 440 in | 1 512 in | 1 584 in | 1 656 in | 1 728 in | 1 800 in | 1 872 in | 1 944 in | 2 016 in | 2 088 in | 2 160 in | 2 232 in | 2 304 in | 2 376 in | 2 448 in | 2 520 in | 2 592 in | 2 664 in | 2 736 in | 2 808 in | 2 880 in | 2 952 in | 3 024 in | 3 096 in | 3 168 in | 3 240 in | 3 312 in | 3 384 in | 3 456 in | 3 528 in | 3 600 in | 3 672 in | 3 744 in | 3 816 in | 3 888 in | 3 960 in | 4 032 in | 4 104 in | 4 176 in | 4 248 in | 4 320 in | 4 392 in | 4 464 in | 4 536 in | 4 608 in | 4 680 in | 4 752 in | 4 824 in | 4 896 in | 4 968 in | 5 040 in | 5 112 in | 5 184 in | 5 256 in | 5 328 in | 5 400 in | 5 472 in | 5 544 in | 5 616 in | 5 688 in | 5 760 in | 5 832 in | 5 904 in | 5 976 in | 6 048 in | 6 120 in | 6 192 in | 6 264 in | 6 336 in | 6 408 in | 6 480 in | 6 552 in | 6 624 in | 6 696 in | 6 768 in | 6 840 in | 6 912 in | 6 984 in | 7 056 in | 7 128 in | 7 200 in |
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 | inches | fathoms | inches |
---|---|---|---|
1 | = 72 | 4 | = 288 |
1.5 | = 108 | 4.5 | = 324 |
2 | = 144 | 5 | = 360 |
2.5 | = 180 | 5.5 | = 396 |
3 | = 216 | 6 | = 432 |
The inch (abbreviation: in or ″) is a unit of length in the (British) imperial and United States customary systems of measurement now formally equal to 1⁄36 yard but usually understood as 1⁄12 of a foot. Derived from the Roman uncia ("twelfth"), inch is also sometimes used to translate related units in other measurement systems, usually understood as deriving from the width of the human thumb.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
inch | in | ≡ 2.54 cm ≡ 1⁄36 yd ≡ 1⁄12 ft | ≡ 0.0254 m | Imperial/US |
inches | fathoms | inches | fathoms |
---|---|---|---|
1 | = 0.013888888888889 | 4 | = 0.055555555555556 |
1.5 | = 0.020833333333333 | 4.5 | = 0.0625 |
2 | = 0.027777777777778 | 5 | = 0.069444444444444 |
2.5 | = 0.034722222222222 | 5.5 | = 0.076388888888889 |
3 | = 0.041666666666667 | 6 | = 0.083333333333333 |
fathoms | inches |
---|---|
1 | = 72 |
0.0138889 | = 1 |
You can find the conversion in other languages in the following:
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 …) |