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 |
foot, metric | 63.6150337 mf | 127.2300674 mf | 190.8451012 mf | 254.4601349 mf | 318.0751686 mf | 381.6902023 mf | 445.3052361 mf | 508.9202698 mf | 572.5353035 mf | 636.1503372 mf | 699.7653710 mf | 763.3804047 mf | 826.9954384 mf | 890.6104721 mf | 954.2255059 mf | 1,017.8405396 mf | 1,081.4555733 mf | 1,145.0706070 mf | 1,208.6856408 mf | 1,272.3006745 mf | 1,335.9157082 mf | 1,399.5307419 mf | 1,463.1457757 mf | 1,526.7608094 mf | 1,590.3758431 mf | 1,653.9908768 mf | 1,717.6059106 mf | 1,781.2209443 mf | 1,844.8359780 mf | 1,908.4510117 mf | 1,972.0660455 mf | 2,035.6810792 mf | 2,099.2961129 mf | 2,162.9111466 mf | 2,226.5261804 mf | 2,290.1412141 mf | 2,353.7562478 mf | 2,417.3712815 mf | 2,480.9863153 mf | 2,544.6013490 mf | 2,608.2163827 mf | 2,671.8314164 mf | 2,735.4464502 mf | 2,799.0614839 mf | 2,862.6765176 mf | 2,926.2915513 mf | 2,989.9065851 mf | 3,053.5216188 mf | 3,117.1366525 mf | 3,180.7516862 mf | 3,244.3667200 mf | 3,307.9817537 mf | 3,371.5967874 mf | 3,435.2118211 mf | 3,498.8268549 mf | 3,562.4418886 mf | 3,626.0569223 mf | 3,689.6719560 mf | 3,753.2869897 mf | 3,816.9020235 mf | 3,880.5170572 mf | 3,944.1320909 mf | 4,007.7471246 mf | 4,071.3621584 mf | 4,134.9771921 mf | 4,198.5922258 mf | 4,262.2072595 mf | 4,325.8222933 mf | 4,389.4373270 mf | 4,453.0523607 mf | 4,516.6673944 mf | 4,580.2824282 mf | 4,643.8974619 mf | 4,707.5124956 mf | 4,771.1275293 mf | 4,834.7425631 mf | 4,898.3575968 mf | 4,961.9726305 mf | 5,025.5876642 mf | 5,089.2026980 mf | 5,152.8177317 mf | 5,216.4327654 mf | 5,280.0477991 mf | 5,343.6628329 mf | 5,407.2778666 mf | 5,470.8929003 mf | 5,534.5079340 mf | 5,598.1229678 mf | 5,661.7380015 mf | 5,725.3530352 mf | 5,788.9680689 mf | 5,852.5831027 mf | 5,916.1981364 mf | 5,979.8131701 mf | 6,043.4282038 mf | 6,107.0432376 mf | 6,170.6582713 mf | 6,234.2733050 mf | 6,297.8883387 mf | 6,361.5033725 mf |
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 | feet, metric | chains | feet, metric |
---|---|---|---|
1 | ≈ 63.615033724546 | 4 | ≈ 254.46013489818 |
1.5 | ≈ 95.422550586818 | 4.5 | ≈ 286.26765176045 |
2 | ≈ 127.23006744909 | 5 | ≈ 318.07516862273 |
2.5 | ≈ 159.03758431136 | 5.5 | ≈ 349.882685485 |
3 | ≈ 190.84510117364 | 6 | ≈ 381.69020234727 |
A metric foot is a nickname for a preferred number length of 3 basic modules (3 M), or 30 centimetres (11.811 in). The 30 cm metric ruler was a similar length to the traditional imperial one-foot ruler. A metric foot is 4.8 millimetres (0.189 in) shorter than an imperial foot.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
foot, metric | mf | ≡ √ 1⁄10 m | ≈ 0.31622776602 m | Metric system Non-SI |
feet, metric | chains | feet, metric | chains |
---|---|---|---|
1 | ≈ 0.015719554662661 | 4 | ≈ 0.062878218650643 |
1.5 | ≈ 0.023579331993991 | 4.5 | ≈ 0.070737995981973 |
2 | ≈ 0.031439109325321 | 5 | ≈ 0.078597773313304 |
2.5 | ≈ 0.039298886656652 | 5.5 | ≈ 0.086457550644634 |
3 | ≈ 0.047158663987982 | 6 | ≈ 0.094317327975964 |
chains | feet, metric |
---|---|
1 | ≈ 63.6150337 |
0.0157196 | ≈ 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 …) |