earth radius | 1 R⊕ | 2 R⊕ | 3 R⊕ | 4 R⊕ | 5 R⊕ | 6 R⊕ | 7 R⊕ | 8 R⊕ | 9 R⊕ | 10 R⊕ | 11 R⊕ | 12 R⊕ | 13 R⊕ | 14 R⊕ | 15 R⊕ | 16 R⊕ | 17 R⊕ | 18 R⊕ | 19 R⊕ | 20 R⊕ | 21 R⊕ | 22 R⊕ | 23 R⊕ | 24 R⊕ | 25 R⊕ | 26 R⊕ | 27 R⊕ | 28 R⊕ | 29 R⊕ | 30 R⊕ | 31 R⊕ | 32 R⊕ | 33 R⊕ | 34 R⊕ | 35 R⊕ | 36 R⊕ | 37 R⊕ | 38 R⊕ | 39 R⊕ | 40 R⊕ | 41 R⊕ | 42 R⊕ | 43 R⊕ | 44 R⊕ | 45 R⊕ | 46 R⊕ | 47 R⊕ | 48 R⊕ | 49 R⊕ | 50 R⊕ | 51 R⊕ | 52 R⊕ | 53 R⊕ | 54 R⊕ | 55 R⊕ | 56 R⊕ | 57 R⊕ | 58 R⊕ | 59 R⊕ | 60 R⊕ | 61 R⊕ | 62 R⊕ | 63 R⊕ | 64 R⊕ | 65 R⊕ | 66 R⊕ | 67 R⊕ | 68 R⊕ | 69 R⊕ | 70 R⊕ | 71 R⊕ | 72 R⊕ | 73 R⊕ | 74 R⊕ | 75 R⊕ | 76 R⊕ | 77 R⊕ | 78 R⊕ | 79 R⊕ | 80 R⊕ | 81 R⊕ | 82 R⊕ | 83 R⊕ | 84 R⊕ | 85 R⊕ | 86 R⊕ | 87 R⊕ | 88 R⊕ | 89 R⊕ | 90 R⊕ | 91 R⊕ | 92 R⊕ | 93 R⊕ | 94 R⊕ | 95 R⊕ | 96 R⊕ | 97 R⊕ | 98 R⊕ | 99 R⊕ | 100 R⊕ |
chain | 316,699.8395374 ch | 633,399.6790748 ch | 950,099.5186123 ch | 1,266,799.3581497 ch | 1,583,499.1976871 ch | 1,900,199.0372245 ch | 2,216,898.876762 ch | 2,533,598.7162994 ch | 2,850,298.5558368 ch | 3,166,998.3953742 ch | 3,483,698.2349116 ch | 3,800,398.0744491 ch | 4,117,097.9139865 ch | 4,433,797.7535239 ch | 4,750,497.5930613 ch | 5,067,197.4325988 ch | 5,383,897.2721362 ch | 5,700,597.1116736 ch | 6,017,296.951211 ch | 6,333,996.7907484 ch | 6,650,696.6302859 ch | 6,967,396.4698233 ch | 7,284,096.3093607 ch | 7,600,796.1488981 ch | 7,917,495.9884356 ch | 8,234,195.827973 ch | 8,550,895.6675104 ch | 8,867,595.5070478 ch | 9,184,295.3465852 ch | 9,500,995.1861227 ch | 9,817,695.0256601 ch | 10,134,394.865198 ch | 10,451,094.704735 ch | 10,767,794.544272 ch | 11,084,494.38381 ch | 11,401,194.223347 ch | 11,717,894.062885 ch | 12,034,593.902422 ch | 12,351,293.741959 ch | 12,667,993.581497 ch | 12,984,693.421034 ch | 13,301,393.260572 ch | 13,618,093.100109 ch | 13,934,792.939647 ch | 14,251,492.779184 ch | 14,568,192.618721 ch | 14,884,892.458259 ch | 15,201,592.297796 ch | 15,518,292.137334 ch | 15,834,991.976871 ch | 16,151,691.816409 ch | 16,468,391.655946 ch | 16,785,091.495483 ch | 17,101,791.335021 ch | 17,418,491.174558 ch | 17,735,191.014096 ch | 18,051,890.853633 ch | 18,368,590.69317 ch | 18,685,290.532708 ch | 19,001,990.372245 ch | 19,318,690.211783 ch | 19,635,390.05132 ch | 19,952,089.890858 ch | 20,268,789.730395 ch | 20,585,489.569932 ch | 20,902,189.40947 ch | 21,218,889.249007 ch | 21,535,589.088545 ch | 21,852,288.928082 ch | 22,168,988.76762 ch | 22,485,688.607157 ch | 22,802,388.446694 ch | 23,119,088.286232 ch | 23,435,788.125769 ch | 23,752,487.965307 ch | 24,069,187.804844 ch | 24,385,887.644382 ch | 24,702,587.483919 ch | 25,019,287.323456 ch | 25,335,987.162994 ch | 25,652,687.002531 ch | 25,969,386.842069 ch | 26,286,086.681606 ch | 26,602,786.521143 ch | 26,919,486.360681 ch | 27,236,186.200218 ch | 27,552,886.039756 ch | 27,869,585.879293 ch | 28,186,285.718831 ch | 28,502,985.558368 ch | 28,819,685.397905 ch | 29,136,385.237443 ch | 29,453,085.07698 ch | 29,769,784.916518 ch | 30,086,484.756055 ch | 30,403,184.595593 ch | 30,719,884.43513 ch | 31,036,584.274667 ch | 31,353,284.114205 ch | 31,669,983.953742 ch |
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⊕.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
earth radius | R⊕ | ≈ 6,371 km | ≈ 6,371 km | Science - Astronomy (Length) |
earth radius | chains | earth radius | chains |
---|---|---|---|
1 | ≈ 316699.83953742 | 4 | ≈ 1266799.3581497 |
1.5 | ≈ 475049.75930613 | 4.5 | ≈ 1425149.2779184 |
2 | ≈ 633399.67907484 | 5 | ≈ 1583499.1976871 |
2.5 | ≈ 791749.59884356 | 5.5 | ≈ 1741849.1174558 |
3 | ≈ 950099.51861227 | 6 | ≈ 1900199.0372245 |
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 | earth radius | chains | earth radius |
---|---|---|---|
1 | ≈ 3.1575639617015E-6 | 4 | ≈ 1.2630255846806E-5 |
1.5 | ≈ 4.7363459425522E-6 | 4.5 | ≈ 1.4209037827657E-5 |
2 | ≈ 6.3151279234029E-6 | 5 | ≈ 1.5787819808507E-5 |
2.5 | ≈ 7.8939099042536E-6 | 5.5 | ≈ 1.7366601789358E-5 |
3 | ≈ 9.4726918851044E-6 | 6 | ≈ 1.8945383770209E-5 |
earth radius | chains |
---|---|
1 | ≈ 316,699.8395374 |
3.1575639617015 × 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 …) |