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 |
ell | 17.6000350 ell | 35.2000700 ell | 52.8001050 ell | 70.4001400 ell | 88.0001750 ell | 105.6002100 ell | 123.2002450 ell | 140.8002800 ell | 158.4003150 ell | 176.0003500 ell | 193.6003850 ell | 211.2004199 ell | 228.8004549 ell | 246.4004899 ell | 264.0005249 ell | 281.6005599 ell | 299.2005949 ell | 316.8006299 ell | 334.4006649 ell | 352.0006999 ell | 369.6007349 ell | 387.2007699 ell | 404.8008049 ell | 422.4008399 ell | 440.0008749 ell | 457.6009099 ell | 475.2009449 ell | 492.8009799 ell | 510.4010149 ell | 528.0010499 ell | 545.6010849 ell | 563.2011199 ell | 580.8011549 ell | 598.4011899 ell | 616.0012248 ell | 633.6012598 ell | 651.2012948 ell | 668.8013298 ell | 686.4013648 ell | 704.0013998 ell | 721.6014348 ell | 739.2014698 ell | 756.8015048 ell | 774.4015398 ell | 792.0015748 ell | 809.6016098 ell | 827.2016448 ell | 844.8016798 ell | 862.4017148 ell | 880.0017498 ell | 897.6017848 ell | 915.2018198 ell | 932.8018548 ell | 950.4018898 ell | 968.0019248 ell | 985.6019598 ell | 1,003.2019948 ell | 1,020.8020297 ell | 1,038.4020647 ell | 1,056.0020997 ell | 1,073.6021347 ell | 1,091.2021697 ell | 1,108.8022047 ell | 1,126.4022397 ell | 1,144.0022747 ell | 1,161.6023097 ell | 1,179.2023447 ell | 1,196.8023797 ell | 1,214.4024147 ell | 1,232.0024497 ell | 1,249.6024847 ell | 1,267.2025197 ell | 1,284.8025547 ell | 1,302.4025897 ell | 1,320.0026247 ell | 1,337.6026597 ell | 1,355.2026947 ell | 1,372.8027297 ell | 1,390.4027647 ell | 1,408.0027997 ell | 1,425.6028346 ell | 1,443.2028696 ell | 1,460.8029046 ell | 1,478.4029396 ell | 1,496.0029746 ell | 1,513.6030096 ell | 1,531.2030446 ell | 1,548.8030796 ell | 1,566.4031146 ell | 1,584.0031496 ell | 1,601.6031846 ell | 1,619.2032196 ell | 1,636.8032546 ell | 1,654.4032896 ell | 1,672.0033246 ell | 1,689.6033596 ell | 1,707.2033946 ell | 1,724.8034296 ell | 1,742.4034646 ell | 1,760.0034996 ell |
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 | ell | chains | ell |
---|---|---|---|
1 | ≈ 17.600034995626 | 4 | ≈ 70.400139982502 |
1.5 | ≈ 26.400052493438 | 4.5 | ≈ 79.200157480315 |
2 | ≈ 35.200069991251 | 5 | ≈ 88.000174978128 |
2.5 | ≈ 44.000087489064 | 5.5 | ≈ 96.800192475941 |
3 | ≈ 52.800104986877 | 6 | ≈ 105.60020997375 |
An ell (from Proto-Germanic *alinō, cognate with Latin ulna) is a unit of measurement, originally a cubit, i.e., approximating the length of a man's arm from the elbow ("elbow" means the bend or bow of the ell or arm) to the tip of the middle finger, or about 18 inches (457 mm); in later usage, any of several longer units.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
ell | ell | ≡ 45 in (In England usually) | = 1.143 m | Other (Length) |
ell | chains | ell | chains |
---|---|---|---|
1 | ≈ 0.056818068841826 | 4 | ≈ 0.2272722753673 |
1.5 | ≈ 0.085227103262739 | 4.5 | ≈ 0.25568130978822 |
2 | ≈ 0.11363613768365 | 5 | ≈ 0.28409034420913 |
2.5 | ≈ 0.14204517210457 | 5.5 | ≈ 0.31249937863004 |
3 | ≈ 0.17045420652548 | 6 | ≈ 0.34090841305096 |
chains | ell |
---|---|
1 | ≈ 17.6000350 |
0.0568181 | ≈ 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 …) |