| 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 |
| astronomical unit | 1.3447276960473 × 10-10 AU | 2.6894553920947 × 10-10 AU | 4.034183088142 × 10-10 AU | 5.3789107841894 × 10-10 AU | 6.7236384802367 × 10-10 AU | 8.0683661762841 × 10-10 AU | 9.4130938723314 × 10-10 AU | 1.0757821568379 × 10-9 AU | 1.2102549264426 × 10-9 AU | 1.3447276960473 × 10-9 AU | 1.4792004656521 × 10-9 AU | 1.6136732352568 × 10-9 AU | 1.7481460048616 × 10-9 AU | 1.8826187744663 × 10-9 AU | 2.017091544071 × 10-9 AU | 2.1515643136758 × 10-9 AU | 2.2860370832805 × 10-9 AU | 2.4205098528852 × 10-9 AU | 2.55498262249 × 10-9 AU | 2.6894553920947 × 10-9 AU | 2.8239281616994 × 10-9 AU | 2.9584009313042 × 10-9 AU | 3.0928737009089 × 10-9 AU | 3.2273464705136 × 10-9 AU | 3.3618192401184 × 10-9 AU | 3.4962920097231 × 10-9 AU | 3.6307647793278 × 10-9 AU | 3.7652375489326 × 10-9 AU | 3.8997103185373 × 10-9 AU | 4.034183088142 × 10-9 AU | 4.1686558577468 × 10-9 AU | 4.3031286273515 × 10-9 AU | 4.4376013969562 × 10-9 AU | 4.572074166561 × 10-9 AU | 4.7065469361657 × 10-9 AU | 4.8410197057705 × 10-9 AU | 4.9754924753752 × 10-9 AU | 5.1099652449799 × 10-9 AU | 5.2444380145847 × 10-9 AU | 5.3789107841894 × 10-9 AU | 5.5133835537941 × 10-9 AU | 5.6478563233989 × 10-9 AU | 5.7823290930036 × 10-9 AU | 5.9168018626083 × 10-9 AU | 6.0512746322131 × 10-9 AU | 6.1857474018178 × 10-9 AU | 6.3202201714225 × 10-9 AU | 6.4546929410273 × 10-9 AU | 6.589165710632 × 10-9 AU | 6.7236384802367 × 10-9 AU | 6.8581112498415 × 10-9 AU | 6.9925840194462 × 10-9 AU | 7.1270567890509 × 10-9 AU | 7.2615295586557 × 10-9 AU | 7.3960023282604 × 10-9 AU | 7.5304750978651 × 10-9 AU | 7.6649478674699 × 10-9 AU | 7.7994206370746 × 10-9 AU | 7.9338934066794 × 10-9 AU | 8.0683661762841 × 10-9 AU | 8.2028389458888 × 10-9 AU | 8.3373117154936 × 10-9 AU | 8.4717844850983 × 10-9 AU | 8.606257254703 × 10-9 AU | 8.7407300243078 × 10-9 AU | 8.8752027939125 × 10-9 AU | 9.0096755635172 × 10-9 AU | 9.144148333122 × 10-9 AU | 9.2786211027267 × 10-9 AU | 9.4130938723314 × 10-9 AU | 9.5475666419362 × 10-9 AU | 9.6820394115409 × 10-9 AU | 9.8165121811456 × 10-9 AU | 9.9509849507504 × 10-9 AU | 1.0085457720355 × 10-8 AU | 1.021993048996 × 10-8 AU | 1.0354403259565 × 10-8 AU | 1.0488876029169 × 10-8 AU | 1.0623348798774 × 10-8 AU | 1.0757821568379 × 10-8 AU | 1.0892294337984 × 10-8 AU | 1.1026767107588 × 10-8 AU | 1.1161239877193 × 10-8 AU | 1.1295712646798 × 10-8 AU | 1.1430185416402 × 10-8 AU | 1.1564658186007 × 10-8 AU | 1.1699130955612 × 10-8 AU | 1.1833603725217 × 10-8 AU | 1.1968076494821 × 10-8 AU | 1.2102549264426 × 10-8 AU | 1.2237022034031 × 10-8 AU | 1.2371494803636 × 10-8 AU | 1.250596757324 × 10-8 AU | 1.2640440342845 × 10-8 AU | 1.277491311245 × 10-8 AU | 1.2909385882055 × 10-8 AU | 1.3043858651659 × 10-8 AU | 1.3178331421264 × 10-8 AU | 1.3312804190869 × 10-8 AU | 1.3447276960473 × 10-8 AU |
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 ≈ 1.3447276960473E-10 astronomical units | 4 chains ≈ 5.3789107841894E-10 astronomical units |
| 1.5 chains ≈ 2.017091544071E-10 astronomical units | 4.5 chains ≈ 6.0512746322131E-10 astronomical units |
| 2 chains ≈ 2.6894553920947E-10 astronomical units | 5 chains ≈ 6.7236384802367E-10 astronomical units |
| 2.5 chains ≈ 3.3618192401184E-10 astronomical units | 5.5 chains ≈ 7.3960023282604E-10 astronomical units |
| 3 chains ≈ 4.034183088142E-10 astronomical units | 6 chains ≈ 8.0683661762841E-10 astronomical units |
The astronomical unit (symbol: au or ua) is a unit of length, roughly the distance from Earth to the Sun. However, that distance varies as Earth orbits the Sun, from a maximum (aphelion) to a minimum (perihelion) and back again once a year. Originally conceived as the average of Earth's aphelion and perihelion, it is now defined as exactly 149 597 870 700 metres (about 150 million kilometres, or 93 million miles). The astronomical unit is used primarily as a convenient yardstick for measuring distances within the Solar System or around other stars. However, it is also a fundamental component in the definition of another unit of astronomical length, the parsec.
| 1 astronomical units ≈ 7436449795.2959 chains | 4 astronomical units ≈ 29745799181.184 chains |
| 1.5 astronomical units ≈ 11154674692.944 chains | 4.5 astronomical units ≈ 33464024078.831 chains |
| 2 astronomical units ≈ 14872899590.592 chains | 5 astronomical units ≈ 37182248976.479 chains |
| 2.5 astronomical units ≈ 18591124488.24 chains | 5.5 astronomical units ≈ 40900473874.127 chains |
| 3 astronomical units ≈ 22309349385.888 chains | 6 astronomical units ≈ 44618698771.775 chains |
| 1 chains ≈ 1.3447276960473 × 10-10 astronomical units |
| 1 astronomical units ≈ 7,436,449,795.2959 chains |