| 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 |
| millimeter | 1,828.8 mm | 3,657.6 mm | 5,486.4 mm | 7,315.2 mm | 9 144 mm | 10,972.8 mm | 12,801.6 mm | 14,630.4 mm | 16,459.2 mm | 18 288 mm | 20,116.8 mm | 21,945.6 mm | 23,774.4 mm | 25,603.2 mm | 27 432 mm | 29,260.8 mm | 31,089.6 mm | 32,918.4 mm | 34,747.2 mm | 36 576 mm | 38,404.8 mm | 40,233.6 mm | 42,062.4 mm | 43,891.2 mm | 45 720 mm | 47,548.8 mm | 49,377.6 mm | 51,206.4 mm | 53,035.2 mm | 54 864 mm | 56,692.8 mm | 58,521.6 mm | 60,350.4 mm | 62,179.2 mm | 64 008 mm | 65,836.8 mm | 67,665.6 mm | 69,494.4 mm | 71,323.2 mm | 73 152 mm | 74,980.8 mm | 76,809.6 mm | 78,638.4 mm | 80,467.2 mm | 82 296 mm | 84,124.8 mm | 85,953.6 mm | 87,782.4 mm | 89,611.2 mm | 91 440 mm | 93,268.8 mm | 95,097.6 mm | 96,926.4 mm | 98,755.2 mm | 100 584 mm | 102,412.8 mm | 104,241.6 mm | 106,070.4 mm | 107,899.2 mm | 109 728 mm | 111,556.8 mm | 113,385.6 mm | 115,214.4 mm | 117,043.2 mm | 118 872 mm | 120,700.8 mm | 122,529.6 mm | 124,358.4 mm | 126,187.2 mm | 128 016 mm | 129,844.8 mm | 131,673.6 mm | 133,502.4 mm | 135,331.2 mm | 137 160 mm | 138,988.8 mm | 140,817.6 mm | 142,646.4 mm | 144,475.2 mm | 146 304 mm | 148,132.8 mm | 149,961.6 mm | 151,790.4 mm | 153,619.2 mm | 155 448 mm | 157,276.8 mm | 159,105.6 mm | 160,934.4 mm | 162,763.2 mm | 164 592 mm | 166,420.8 mm | 168,249.6 mm | 170,078.4 mm | 171,907.2 mm | 173 736 mm | 175,564.8 mm | 177,393.6 mm | 179,222.4 mm | 181,051.2 mm | 182 880 mm |
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 | millimeters | fathoms | millimeters |
|---|---|---|---|
| 1 | = 1828.8 | 4 | = 7315.2 |
| 1.5 | = 2743.2 | 4.5 | = 8229.6 |
| 2 | = 3657.6 | 5 | = 9144 |
| 2.5 | = 4572 | 5.5 | = 10058.4 |
| 3 | = 5486.4 | 6 | = 10972.8 |
The millimetre (International spelling as used by the International Bureau of Weights and Measures; SI unit symbol mm) or millimeter (American spelling) is a unit of length in the metric system, equal to one thousandth of a metre, which is the SI base unit of length. Therefore there are thousand millimetres in a metre. There are ten millimetres in a centimetre.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| millimeter | mm | ≡ 1×10-3 m ≡ 0.001 m | ≡ 1×10-3 m ≡ 0.001 m | Metric system SI |
| millimeters | fathoms | millimeters | fathoms |
|---|---|---|---|
| 1 | = 0.00054680664916885 | 4 | = 0.0021872265966754 |
| 1.5 | = 0.00082020997375328 | 4.5 | = 0.0024606299212598 |
| 2 | = 0.0010936132983377 | 5 | = 0.0027340332458443 |
| 2.5 | = 0.0013670166229221 | 5.5 | = 0.0030074365704287 |
| 3 | = 0.0016404199475066 | 6 | = 0.0032808398950131 |
| fathoms | millimeters |
|---|---|
| 1 | = 1,828.8 |
| 0.0005468 | = 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 …) |