| 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.
| 1 fathoms = 72 inches | 4 fathoms = 288 inches |
| 1.5 fathoms = 108 inches | 4.5 fathoms = 324 inches |
| 2 fathoms = 144 inches | 5 fathoms = 360 inches |
| 2.5 fathoms = 180 inches | 5.5 fathoms = 396 inches |
| 3 fathoms = 216 inches | 6 fathoms = 432 inches |
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.
| 1 inches = 0.013888888888889 fathoms | 4 inches = 0.055555555555556 fathoms |
| 1.5 inches = 0.020833333333333 fathoms | 4.5 inches = 0.0625 fathoms |
| 2 inches = 0.027777777777778 fathoms | 5 inches = 0.069444444444444 fathoms |
| 2.5 inches = 0.034722222222222 fathoms | 5.5 inches = 0.076388888888889 fathoms |
| 3 inches = 0.041666666666667 fathoms | 6 inches = 0.083333333333333 fathoms |
| 1 fathoms = 72 inches |
| 1 inches = 0.0138889 fathoms |