| 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 |
| earth radius | 3.1575639617015 × 10-6R⊕ | 6.3151279234029 × 10-6R⊕ | 9.4726918851044 × 10-6R⊕ | 1.2630255846806 × 10-5R⊕ | 1.5787819808507 × 10-5R⊕ | 1.8945383770209 × 10-5R⊕ | 2.210294773191 × 10-5R⊕ | 2.5260511693612 × 10-5R⊕ | 2.8418075655313 × 10-5R⊕ | 3.1575639617015 × 10-5R⊕ | 3.4733203578716 × 10-5R⊕ | 3.7890767540418 × 10-5R⊕ | 4.1048331502119 × 10-5R⊕ | 4.420589546382 × 10-5R⊕ | 4.7363459425522 × 10-5R⊕ | 5.0521023387223 × 10-5R⊕ | 5.3678587348925 × 10-5R⊕ | 5.6836151310626 × 10-5R⊕ | 5.9993715272328 × 10-5R⊕ | 6.3151279234029 × 10-5R⊕ | 6.6308843195731 × 10-5R⊕ | 6.9466407157432 × 10-5R⊕ | 7.2623971119134 × 10-5R⊕ | 7.5781535080835 × 10-5R⊕ | 7.8939099042536 × 10-5R⊕ | 8.2096663004238 × 10-5R⊕ | 8.5254226965939 × 10-5R⊕ | 8.8411790927641 × 10-5R⊕ | 9.1569354889342 × 10-5R⊕ | 9.4726918851044 × 10-5R⊕ | 9.7884482812745 × 10-5R⊕ | 0.0001010 R⊕ | 0.0001042 R⊕ | 0.0001074 R⊕ | 0.0001105 R⊕ | 0.0001137 R⊕ | 0.0001168 R⊕ | 0.0001200 R⊕ | 0.0001231 R⊕ | 0.0001263 R⊕ | 0.0001295 R⊕ | 0.0001326 R⊕ | 0.0001358 R⊕ | 0.0001389 R⊕ | 0.0001421 R⊕ | 0.0001452 R⊕ | 0.0001484 R⊕ | 0.0001516 R⊕ | 0.0001547 R⊕ | 0.0001579 R⊕ | 0.0001610 R⊕ | 0.0001642 R⊕ | 0.0001674 R⊕ | 0.0001705 R⊕ | 0.0001737 R⊕ | 0.0001768 R⊕ | 0.0001800 R⊕ | 0.0001831 R⊕ | 0.0001863 R⊕ | 0.0001895 R⊕ | 0.0001926 R⊕ | 0.0001958 R⊕ | 0.0001989 R⊕ | 0.0002021 R⊕ | 0.0002052 R⊕ | 0.0002084 R⊕ | 0.0002116 R⊕ | 0.0002147 R⊕ | 0.0002179 R⊕ | 0.0002210 R⊕ | 0.0002242 R⊕ | 0.0002273 R⊕ | 0.0002305 R⊕ | 0.0002337 R⊕ | 0.0002368 R⊕ | 0.0002400 R⊕ | 0.0002431 R⊕ | 0.0002463 R⊕ | 0.0002494 R⊕ | 0.0002526 R⊕ | 0.0002558 R⊕ | 0.0002589 R⊕ | 0.0002621 R⊕ | 0.0002652 R⊕ | 0.0002684 R⊕ | 0.0002716 R⊕ | 0.0002747 R⊕ | 0.0002779 R⊕ | 0.0002810 R⊕ | 0.0002842 R⊕ | 0.0002873 R⊕ | 0.0002905 R⊕ | 0.0002937 R⊕ | 0.0002968 R⊕ | 0.0003000 R⊕ | 0.0003031 R⊕ | 0.0003063 R⊕ | 0.0003094 R⊕ | 0.0003126 R⊕ | 0.0003158 R⊕ |
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.
| 1 chains ≈ 3.1575639617015E-6 earth radius | 4 chains ≈ 1.2630255846806E-5 earth radius |
| 1.5 chains ≈ 4.7363459425522E-6 earth radius | 4.5 chains ≈ 1.4209037827657E-5 earth radius |
| 2 chains ≈ 6.3151279234029E-6 earth radius | 5 chains ≈ 1.5787819808507E-5 earth radius |
| 2.5 chains ≈ 7.8939099042536E-6 earth radius | 5.5 chains ≈ 1.7366601789358E-5 earth radius |
| 3 chains ≈ 9.4726918851044E-6 earth radius | 6 chains ≈ 1.8945383770209E-5 earth radius |
Earth radius is the distance from Earth's center to its surface, about 6,371 km (3,959 mi). This length is also used as a unit of distance, especially in astronomy and geology, where it is usually denoted by R⊕.
| 1 earth radius ≈ 316699.83953742 chains | 4 earth radius ≈ 1266799.3581497 chains |
| 1.5 earth radius ≈ 475049.75930613 chains | 4.5 earth radius ≈ 1425149.2779184 chains |
| 2 earth radius ≈ 633399.67907484 chains | 5 earth radius ≈ 1583499.1976871 chains |
| 2.5 earth radius ≈ 791749.59884356 chains | 5.5 earth radius ≈ 1741849.1174558 chains |
| 3 earth radius ≈ 950099.51861227 chains | 6 earth radius ≈ 1900199.0372245 chains |
| 1 chains ≈ 3.1575639617015 × 10-6 earth radius |
| 1 earth radius ≈ 316,699.8395374 chains |