| 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 |
| finger (cloth) | 16 finger (cloth) | 32 finger (cloth) | 48 finger (cloth) | 64 finger (cloth) | 80 finger (cloth) | 96 finger (cloth) | 112 finger (cloth) | 128 finger (cloth) | 144 finger (cloth) | 160 finger (cloth) | 176 finger (cloth) | 192 finger (cloth) | 208 finger (cloth) | 224 finger (cloth) | 240 finger (cloth) | 256 finger (cloth) | 272 finger (cloth) | 288 finger (cloth) | 304 finger (cloth) | 320 finger (cloth) | 336 finger (cloth) | 352 finger (cloth) | 368 finger (cloth) | 384 finger (cloth) | 400 finger (cloth) | 416 finger (cloth) | 432 finger (cloth) | 448 finger (cloth) | 464 finger (cloth) | 480 finger (cloth) | 496 finger (cloth) | 512 finger (cloth) | 528 finger (cloth) | 544 finger (cloth) | 560 finger (cloth) | 576 finger (cloth) | 592 finger (cloth) | 608 finger (cloth) | 624 finger (cloth) | 640 finger (cloth) | 656 finger (cloth) | 672 finger (cloth) | 688 finger (cloth) | 704 finger (cloth) | 720 finger (cloth) | 736 finger (cloth) | 752 finger (cloth) | 768 finger (cloth) | 784 finger (cloth) | 800 finger (cloth) | 816 finger (cloth) | 832 finger (cloth) | 848 finger (cloth) | 864 finger (cloth) | 880 finger (cloth) | 896 finger (cloth) | 912 finger (cloth) | 928 finger (cloth) | 944 finger (cloth) | 960 finger (cloth) | 976 finger (cloth) | 992 finger (cloth) | 1 008 finger (cloth) | 1 024 finger (cloth) | 1 040 finger (cloth) | 1 056 finger (cloth) | 1 072 finger (cloth) | 1 088 finger (cloth) | 1 104 finger (cloth) | 1 120 finger (cloth) | 1 136 finger (cloth) | 1 152 finger (cloth) | 1 168 finger (cloth) | 1 184 finger (cloth) | 1 200 finger (cloth) | 1 216 finger (cloth) | 1 232 finger (cloth) | 1 248 finger (cloth) | 1 264 finger (cloth) | 1 280 finger (cloth) | 1 296 finger (cloth) | 1 312 finger (cloth) | 1 328 finger (cloth) | 1 344 finger (cloth) | 1 360 finger (cloth) | 1 376 finger (cloth) | 1 392 finger (cloth) | 1 408 finger (cloth) | 1 424 finger (cloth) | 1 440 finger (cloth) | 1 456 finger (cloth) | 1 472 finger (cloth) | 1 488 finger (cloth) | 1 504 finger (cloth) | 1 520 finger (cloth) | 1 536 finger (cloth) | 1 552 finger (cloth) | 1 568 finger (cloth) | 1 584 finger (cloth) | 1 600 finger (cloth) |
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 | finger (cloth) | fathoms | finger (cloth) |
|---|---|---|---|
| 1 | = 16 | 4 | = 64 |
| 1.5 | = 24 | 4.5 | = 72 |
| 2 | = 32 | 5 | = 80 |
| 2.5 | = 40 | 5.5 | = 88 |
| 3 | = 48 | 6 | = 96 |
A finger (sometimes fingerbreadth or finger's breadth) is any of several units of measurement that are approximately the width of an adult human finger, including:
The digit, also known as digitus or digitus transversus (Latin), dactyl (Greek) or dactylus, or finger's breadth — 3⁄4 of an inch or 1⁄16 of a foot
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| finger (cloth) | ≡ 4 ⁄12 in | = 0.1143 m | Other (Length) |
| finger (cloth) | fathoms | finger (cloth) | fathoms |
|---|---|---|---|
| 1 | = 0.0625 | 4 | = 0.25 |
| 1.5 | = 0.09375 | 4.5 | = 0.28125 |
| 2 | = 0.125 | 5 | = 0.3125 |
| 2.5 | = 0.15625 | 5.5 | = 0.34375 |
| 3 | = 0.1875 | 6 | = 0.375 |
| fathoms | finger (cloth) |
|---|---|
| 1 | = 16 |
| 0.0625 | = 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 …) |