| astronomical unit | 1 AU | 2 AU | 3 AU | 4 AU | 5 AU | 6 AU | 7 AU | 8 AU | 9 AU | 10 AU | 11 AU | 12 AU | 13 AU | 14 AU | 15 AU | 16 AU | 17 AU | 18 AU | 19 AU | 20 AU | 21 AU | 22 AU | 23 AU | 24 AU | 25 AU | 26 AU | 27 AU | 28 AU | 29 AU | 30 AU | 31 AU | 32 AU | 33 AU | 34 AU | 35 AU | 36 AU | 37 AU | 38 AU | 39 AU | 40 AU | 41 AU | 42 AU | 43 AU | 44 AU | 45 AU | 46 AU | 47 AU | 48 AU | 49 AU | 50 AU | 51 AU | 52 AU | 53 AU | 54 AU | 55 AU | 56 AU | 57 AU | 58 AU | 59 AU | 60 AU | 61 AU | 62 AU | 63 AU | 64 AU | 65 AU | 66 AU | 67 AU | 68 AU | 69 AU | 70 AU | 71 AU | 72 AU | 73 AU | 74 AU | 75 AU | 76 AU | 77 AU | 78 AU | 79 AU | 80 AU | 81 AU | 82 AU | 83 AU | 84 AU | 85 AU | 86 AU | 87 AU | 88 AU | 89 AU | 90 AU | 91 AU | 92 AU | 93 AU | 94 AU | 95 AU | 96 AU | 97 AU | 98 AU | 99 AU | 100 AU |
| inch | 5,889,679,948,818.9 in | 11 779 359 897 638 in | 17 669 039 846 457 in | 23 558 719 795 276 in | 29 448 399 744 094 in | 35 338 079 692 913 in | 41 227 759 641 732 in | 47 117 439 590 551 in | 53 007 119 539 370 in | 58 896 799 488 189 in | 64 786 479 437 008 in | 70 676 159 385 827 in | 76 565 839 334 646 in | 82 455 519 283 465 in | 88 345 199 232 283 in | 94 234 879 181 102 in | 1.0012455912992 × 1014 in | 1.0601423907874 × 1014 in | 1.1190391902756 × 1014 in | 1.1779359897638 × 1014 in | 1.236832789252 × 1014 in | 1.2957295887402 × 1014 in | 1.3546263882283 × 1014 in | 1.4135231877165 × 1014 in | 1.4724199872047 × 1014 in | 1.5313167866929 × 1014 in | 1.5902135861811 × 1014 in | 1.6491103856693 × 1014 in | 1.7080071851575 × 1014 in | 1.7669039846457 × 1014 in | 1.8258007841339 × 1014 in | 1.884697583622 × 1014 in | 1.9435943831102 × 1014 in | 2.0024911825984 × 1014 in | 2.0613879820866 × 1014 in | 2.1202847815748 × 1014 in | 2.179181581063 × 1014 in | 2.2380783805512 × 1014 in | 2.2969751800394 × 1014 in | 2.3558719795276 × 1014 in | 2.4147687790157 × 1014 in | 2.4736655785039 × 1014 in | 2.5325623779921 × 1014 in | 2.5914591774803 × 1014 in | 2.6503559769685 × 1014 in | 2.7092527764567 × 1014 in | 2.7681495759449 × 1014 in | 2.8270463754331 × 1014 in | 2.8859431749213 × 1014 in | 2.9448399744094 × 1014 in | 3.0037367738976 × 1014 in | 3.0626335733858 × 1014 in | 3.121530372874 × 1014 in | 3.1804271723622 × 1014 in | 3.2393239718504 × 1014 in | 3.2982207713386 × 1014 in | 3.3571175708268 × 1014 in | 3.416014370315 × 1014 in | 3.4749111698032 × 1014 in | 3.5338079692913 × 1014 in | 3.5927047687795 × 1014 in | 3.6516015682677 × 1014 in | 3.7104983677559 × 1014 in | 3.7693951672441 × 1014 in | 3.8282919667323 × 1014 in | 3.8871887662205 × 1014 in | 3.9460855657087 × 1014 in | 4.0049823651969 × 1014 in | 4.063879164685 × 1014 in | 4.1227759641732 × 1014 in | 4.1816727636614 × 1014 in | 4.2405695631496 × 1014 in | 4.2994663626378 × 1014 in | 4.358363162126 × 1014 in | 4.4172599616142 × 1014 in | 4.4761567611024 × 1014 in | 4.5350535605906 × 1014 in | 4.5939503600787 × 1014 in | 4.6528471595669 × 1014 in | 4.7117439590551 × 1014 in | 4.7706407585433 × 1014 in | 4.8295375580315 × 1014 in | 4.8884343575197 × 1014 in | 4.9473311570079 × 1014 in | 5.0062279564961 × 1014 in | 5.0651247559843 × 1014 in | 5.1240215554724 × 1014 in | 5.1829183549606 × 1014 in | 5.2418151544488 × 1014 in | 5.300711953937 × 1014 in | 5.3596087534252 × 1014 in | 5.4185055529134 × 1014 in | 5.4774023524016 × 1014 in | 5.5362991518898 × 1014 in | 5.595195951378 × 1014 in | 5.6540927508661 × 1014 in | 5.7129895503543 × 1014 in | 5.7718863498425 × 1014 in | 5.8307831493307 × 1014 in | 5.8896799488189 × 1014 in |
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.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| astronomical unit | AU | ≡ 149 597 870 700 m ≈ Distance from Earth to Sun | ≡ 149 597 870 700 m | Science - Astronomy (Length) |
| astronomical units | inches | astronomical units | inches |
|---|---|---|---|
| 1 | ≡ 5889679948818.9 | 4 | ≡ 23558719795276 |
| 1.5 | ≡ 8834519923228.3 | 4.5 | ≡ 26503559769685 |
| 2 | ≡ 11779359897638 | 5 | ≡ 29448399744094 |
| 2.5 | ≡ 14724199872047 | 5.5 | ≡ 32393239718504 |
| 3 | ≡ 17669039846457 | 6 | ≡ 35338079692913 |
The inch (abbreviation: in or ″) is a unit of length in the (British) imperial and United States customary systems of measurement now formally equal to 1⁄36 yard but usually understood as 1⁄12 of a foot. Derived from the Roman uncia ("twelfth"), inch is also sometimes used to translate related units in other measurement systems, usually understood as deriving from the width of the human thumb.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| inch | in | ≡ 2.54 cm ≡ 1⁄36 yd ≡ 1⁄12 ft | ≡ 0.0254 m | Imperial/US |
| inches | astronomical units | inches | astronomical units |
|---|---|---|---|
| 1 | ≡ 1.6978851290562E-13 | 4 | ≡ 6.7915405162247E-13 |
| 1.5 | ≡ 2.5468276935843E-13 | 4.5 | ≡ 7.6404830807528E-13 |
| 2 | ≡ 3.3957702581124E-13 | 5 | ≡ 8.4894256452809E-13 |
| 2.5 | ≡ 4.2447128226405E-13 | 5.5 | ≡ 9.338368209809E-13 |
| 3 | ≡ 5.0936553871686E-13 | 6 | ≡ 1.0187310774337E-12 |
| astronomical units | inches |
|---|---|
| 1 | ≡ 5,889,679,948,818.9 |
| 1.6978851290562 × 10-13 | ≡ 1 |
You can find the conversion in other languages in the following:
| 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 …) |