chain | 1 ch | 2 ch | 3 ch | 4 ch | 5 ch | 6 ch | 7 ch | 8 ch | 9 ch | 10 ch | 11 ch | 12 ch | 13 ch | 14 ch | 15 ch | 16 ch | 17 ch | 18 ch | 19 ch | 20 ch | 21 ch | 22 ch | 23 ch | 24 ch | 25 ch | 26 ch | 27 ch | 28 ch | 29 ch | 30 ch | 31 ch | 32 ch | 33 ch | 34 ch | 35 ch | 36 ch | 37 ch | 38 ch | 39 ch | 40 ch | 41 ch | 42 ch | 43 ch | 44 ch | 45 ch | 46 ch | 47 ch | 48 ch | 49 ch | 50 ch | 51 ch | 52 ch | 53 ch | 54 ch | 55 ch | 56 ch | 57 ch | 58 ch | 59 ch | 60 ch | 61 ch | 62 ch | 63 ch | 64 ch | 65 ch | 66 ch | 67 ch | 68 ch | 69 ch | 70 ch | 71 ch | 72 ch | 73 ch | 74 ch | 75 ch | 76 ch | 77 ch | 78 ch | 79 ch | 80 ch | 81 ch | 82 ch | 83 ch | 84 ch | 85 ch | 86 ch | 87 ch | 88 ch | 89 ch | 90 ch | 91 ch | 92 ch | 93 ch | 94 ch | 95 ch | 96 ch | 97 ch | 98 ch | 99 ch | 100 ch |
thou | 792,001.5748032 th | 1,584,003.1496063 th | 2,376,004.7244094 th | 3,168,006.2992126 th | 3,960,007.8740157 th | 4,752,009.4488189 th | 5,544,011.023622 th | 6,336,012.5984252 th | 7,128,014.1732283 th | 7,920,015.7480315 th | 8,712,017.3228346 th | 9,504,018.8976378 th | 10,296,020.472441 th | 11,088,022.047244 th | 11,880,023.622047 th | 12,672,025.19685 th | 13,464,026.771654 th | 14,256,028.346457 th | 15,048,029.92126 th | 15,840,031.496063 th | 16,632,033.070866 th | 17,424,034.645669 th | 18,216,036.220472 th | 19,008,037.795276 th | 19,800,039.370079 th | 20,592,040.944882 th | 21,384,042.519685 th | 22,176,044.094488 th | 22,968,045.669291 th | 23,760,047.244094 th | 24,552,048.818898 th | 25,344,050.393701 th | 26,136,051.968504 th | 26,928,053.543307 th | 27,720,055.11811 th | 28,512,056.692913 th | 29,304,058.267717 th | 30,096,059.84252 th | 30,888,061.417323 th | 31,680,062.992126 th | 32,472,064.566929 th | 33,264,066.141732 th | 34,056,067.716535 th | 34,848,069.291339 th | 35,640,070.866142 th | 36,432,072.440945 th | 37,224,074.015748 th | 38,016,075.590551 th | 38,808,077.165354 th | 39,600,078.740157 th | 40,392,080.314961 th | 41,184,081.889764 th | 41,976,083.464567 th | 42,768,085.03937 th | 43,560,086.614173 th | 44,352,088.188976 th | 45,144,089.76378 th | 45,936,091.338583 th | 46,728,092.913386 th | 47,520,094.488189 th | 48,312,096.062992 th | 49,104,097.637795 th | 49,896,099.212598 th | 50,688,100.787402 th | 51,480,102.362205 th | 52,272,103.937008 th | 53,064,105.511811 th | 53,856,107.086614 th | 54,648,108.661417 th | 55,440,110.23622 th | 56,232,111.811024 th | 57,024,113.385827 th | 57,816,114.96063 th | 58,608,116.535433 th | 59,400,118.110236 th | 60,192,119.685039 th | 60,984,121.259843 th | 61,776,122.834646 th | 62,568,124.409449 th | 63,360,125.984252 th | 64,152,127.559055 th | 64,944,129.133858 th | 65,736,130.708661 th | 66,528,132.283465 th | 67,320,133.858268 th | 68,112,135.433071 th | 68,904,137.007874 th | 69,696,138.582677 th | 70,488,140.15748 th | 71,280,141.732283 th | 72,072,143.307087 th | 72,864,144.88189 th | 73,656,146.456693 th | 74,448,148.031496 th | 75,240,149.606299 th | 76,032,151.181102 th | 76,824,152.755906 th | 77,616,154.330709 th | 78,408,155.905512 th | 79,200,157.480315 th |
A chain is a unit of length. It measures 66 feet, or 22 yards, or 100 links, or 4 rods (20.1168 m). There are 10 chains in a furlong, and 80 chains in one statute mile. An acre is the area of 10 square chains (that is, an area of one chain by one furlong). The chain has been used for several centuries in Britain and in some other countries influenced by British practice.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
chain | ch | ≡ 66 ft (US) ≡ 4 rods | ≈ 20.11684 m | Imperial/US |
chains | thous | chains | thous |
---|---|---|---|
1 | ≈ 792001.57480315 | 4 | ≈ 3168006.2992126 |
1.5 | ≈ 1188002.3622047 | 4.5 | ≈ 3564007.0866142 |
2 | ≈ 1584003.1496063 | 5 | ≈ 3960007.8740157 |
2.5 | ≈ 1980003.9370079 | 5.5 | ≈ 4356008.6614173 |
3 | ≈ 2376004.7244094 | 6 | ≈ 4752009.4488189 |
A thousandth of an inch is a derived unit of length in an inch-based system of units. Equal to 0.001 inches, it is normally referred to as a thou /ˈθaʊ/, a thousandth, or (particularly in the United States) a mil.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
thou | th | ≡ 1×10−3 in | ≡ 2.54×10−5 m | Imperial/US |
thous | chains | thous | chains |
---|---|---|---|
1 | ≈ 1.2626237520406E-6 | 4 | ≈ 5.0504950081623E-6 |
1.5 | ≈ 1.8939356280609E-6 | 4.5 | ≈ 5.6818068841826E-6 |
2 | ≈ 2.5252475040812E-6 | 5 | ≈ 6.3131187602029E-6 |
2.5 | ≈ 3.1565593801014E-6 | 5.5 | ≈ 6.9444306362232E-6 |
3 | ≈ 3.7878712561217E-6 | 6 | ≈ 7.5757425122435E-6 |
chains | thous |
---|---|
1 | ≈ 792,001.5748032 |
1.2626237520406 × 10-6 | ≈ 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 …) |