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 |
cubit | 40.23368 cubit | 80.46736 cubit | 120.70104 cubit | 160.93472 cubit | 201.1684 cubit | 241.40208 cubit | 281.63576 cubit | 321.86944 cubit | 362.10312 cubit | 402.3368 cubit | 442.57048 cubit | 482.80416 cubit | 523.03784 cubit | 563.27152 cubit | 603.5052 cubit | 643.73888 cubit | 683.97256 cubit | 724.20624 cubit | 764.43992 cubit | 804.6736 cubit | 844.90728 cubit | 885.14096 cubit | 925.37464 cubit | 965.60832 cubit | 1,005.842 cubit | 1,046.07568 cubit | 1,086.30936 cubit | 1,126.54304 cubit | 1,166.77672 cubit | 1,207.0104 cubit | 1,247.24408 cubit | 1,287.47776 cubit | 1,327.71144 cubit | 1,367.94512 cubit | 1,408.1788 cubit | 1,448.41248 cubit | 1,488.64616 cubit | 1,528.87984 cubit | 1,569.11352 cubit | 1,609.3472 cubit | 1,649.58088 cubit | 1,689.81456 cubit | 1,730.04824 cubit | 1,770.28192 cubit | 1,810.5156 cubit | 1,850.74928 cubit | 1,890.98296 cubit | 1,931.21664 cubit | 1,971.45032 cubit | 2,011.684 cubit | 2,051.91768 cubit | 2,092.15136 cubit | 2,132.38504 cubit | 2,172.61872 cubit | 2,212.8524 cubit | 2,253.08608 cubit | 2,293.31976 cubit | 2,333.55344 cubit | 2,373.78712 cubit | 2,414.0208 cubit | 2,454.25448 cubit | 2,494.48816 cubit | 2,534.72184 cubit | 2,574.95552 cubit | 2,615.1892 cubit | 2,655.42288 cubit | 2,695.65656 cubit | 2,735.89024 cubit | 2,776.12392 cubit | 2,816.3576 cubit | 2,856.59128 cubit | 2,896.82496 cubit | 2,937.05864 cubit | 2,977.29232 cubit | 3,017.526 cubit | 3,057.75968 cubit | 3,097.99336 cubit | 3,138.22704 cubit | 3,178.46072 cubit | 3,218.6944 cubit | 3,258.92808 cubit | 3,299.16176 cubit | 3,339.39544 cubit | 3,379.62912 cubit | 3,419.8628 cubit | 3,460.09648 cubit | 3,500.33016 cubit | 3,540.56384 cubit | 3,580.79752 cubit | 3,621.0312 cubit | 3,661.26488 cubit | 3,701.49856 cubit | 3,741.73224 cubit | 3,781.96592 cubit | 3,822.1996 cubit | 3,862.43328 cubit | 3,902.66696 cubit | 3,942.90064 cubit | 3,983.13432 cubit | 4,023.368 cubit |
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 | cubit | chains | cubit |
---|---|---|---|
1 | ≈ 40.23368 | 4 | ≈ 160.93472 |
1.5 | ≈ 60.35052 | 4.5 | ≈ 181.05156 |
2 | ≈ 80.46736 | 5 | ≈ 201.1684 |
2.5 | ≈ 100.5842 | 5.5 | ≈ 221.28524 |
3 | ≈ 120.70104 | 6 | ≈ 241.40208 |
The cubit is an ancient unit based on the forearm length from the tip of the middle finger to the bottom of the elbow. Cubits of various lengths were employed in many parts of the world in antiquity, during the Middle Ages and as recently as Early Modern Times. The term is still used in hedge laying, the length of the forearm being frequently used to determine the interval between stakes placed within the hedge.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
cubit | ≡ Distance from fingers to elbow ≈ 18 in | ≈ 0.5 m | Other (Length) |
cubit | chains | cubit | chains |
---|---|---|---|
1 | ≈ 0.024854798268515 | 4 | ≈ 0.099419193074061 |
1.5 | ≈ 0.037282197402773 | 4.5 | ≈ 0.11184659220832 |
2 | ≈ 0.049709596537031 | 5 | ≈ 0.12427399134258 |
2.5 | ≈ 0.062136995671288 | 5.5 | ≈ 0.13670139047683 |
3 | ≈ 0.074564394805546 | 6 | ≈ 0.14912878961109 |
chains | cubit |
---|---|
1 | ≈ 40.23368 |
0.0248548 | ≈ 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 …) |