| 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 |
| millimeter | 1.495978707 × 1014 mm | 2.991957414 × 1014 mm | 4.487936121 × 1014 mm | 5.983914828 × 1014 mm | 7.479893535 × 1014 mm | 8.975872242 × 1014 mm | 1.0471850949 × 1015 mm | 1.1967829656 × 1015 mm | 1.3463808363 × 1015 mm | 1.495978707 × 1015 mm | 1.6455765777 × 1015 mm | 1.7951744484 × 1015 mm | 1.9447723191 × 1015 mm | 2.0943701898 × 1015 mm | 2.2439680605 × 1015 mm | 2.3935659312 × 1015 mm | 2.5431638019 × 1015 mm | 2.6927616726 × 1015 mm | 2.8423595433 × 1015 mm | 2.991957414 × 1015 mm | 3.1415552847 × 1015 mm | 3.2911531554 × 1015 mm | 3.4407510261 × 1015 mm | 3.5903488968 × 1015 mm | 3.7399467675 × 1015 mm | 3.8895446382 × 1015 mm | 4.0391425089 × 1015 mm | 4.1887403796 × 1015 mm | 4.3383382503 × 1015 mm | 4.487936121 × 1015 mm | 4.6375339917 × 1015 mm | 4.7871318624 × 1015 mm | 4.9367297331 × 1015 mm | 5.0863276038 × 1015 mm | 5.2359254745 × 1015 mm | 5.3855233452 × 1015 mm | 5.5351212159 × 1015 mm | 5.6847190866 × 1015 mm | 5.8343169573 × 1015 mm | 5.983914828 × 1015 mm | 6.1335126987 × 1015 mm | 6.2831105694 × 1015 mm | 6.4327084401 × 1015 mm | 6.5823063108 × 1015 mm | 6.7319041815 × 1015 mm | 6.8815020522 × 1015 mm | 7.0310999229 × 1015 mm | 7.1806977936 × 1015 mm | 7.3302956643 × 1015 mm | 7.479893535 × 1015 mm | 7.6294914057 × 1015 mm | 7.7790892764 × 1015 mm | 7.9286871471 × 1015 mm | 8.0782850178 × 1015 mm | 8.2278828885 × 1015 mm | 8.3774807592 × 1015 mm | 8.5270786299 × 1015 mm | 8.6766765006 × 1015 mm | 8.8262743713 × 1015 mm | 8.975872242 × 1015 mm | 9.1254701127 × 1015 mm | 9.2750679834 × 1015 mm | 9.4246658541 × 1015 mm | 9.5742637248 × 1015 mm | 9.7238615955 × 1015 mm | 9.8734594662 × 1015 mm | 1.00230573369 × 1016 mm | 1.01726552076 × 1016 mm | 1.03222530783 × 1016 mm | 1.0471850949 × 1016 mm | 1.06214488197 × 1016 mm | 1.07710466904 × 1016 mm | 1.09206445611 × 1016 mm | 1.10702424318 × 1016 mm | 1.12198403025 × 1016 mm | 1.13694381732 × 1016 mm | 1.15190360439 × 1016 mm | 1.16686339146 × 1016 mm | 1.18182317853 × 1016 mm | 1.1967829656 × 1016 mm | 1.21174275267 × 1016 mm | 1.22670253974 × 1016 mm | 1.24166232681 × 1016 mm | 1.25662211388 × 1016 mm | 1.27158190095 × 1016 mm | 1.28654168802 × 1016 mm | 1.30150147509 × 1016 mm | 1.31646126216 × 1016 mm | 1.33142104923 × 1016 mm | 1.3463808363 × 1016 mm | 1.36134062337 × 1016 mm | 1.37630041044 × 1016 mm | 1.39126019751 × 1016 mm | 1.40621998458 × 1016 mm | 1.42117977165 × 1016 mm | 1.43613955872 × 1016 mm | 1.45109934579 × 1016 mm | 1.46605913286 × 1016 mm | 1.48101891993 × 1016 mm | 1.495978707 × 1016 mm |
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 ≡ 1.495978707E+14 millimeters | 4 astronomical units ≡ 5.983914828E+14 millimeters |
| 1.5 astronomical units ≡ 2.2439680605E+14 millimeters | 4.5 astronomical units ≡ 6.7319041815E+14 millimeters |
| 2 astronomical units ≡ 2.991957414E+14 millimeters | 5 astronomical units ≡ 7.479893535E+14 millimeters |
| 2.5 astronomical units ≡ 3.7399467675E+14 millimeters | 5.5 astronomical units ≡ 8.2278828885E+14 millimeters |
| 3 astronomical units ≡ 4.487936121E+14 millimeters | 6 astronomical units ≡ 8.975872242E+14 millimeters |
The millimetre (International spelling as used by the International Bureau of Weights and Measures; SI unit symbol mm) or millimeter (American spelling) is a unit of length in the metric system, equal to one thousandth of a metre, which is the SI base unit of length. Therefore there are thousand millimetres in a metre. There are ten millimetres in a centimetre.
| 1 millimeters ≡ 6.6845871222684E-15 astronomical units | 4 millimeters ≡ 2.6738348489074E-14 astronomical units |
| 1.5 millimeters ≡ 1.0026880683403E-14 astronomical units | 4.5 millimeters ≡ 3.0080642050208E-14 astronomical units |
| 2 millimeters ≡ 1.3369174244537E-14 astronomical units | 5 millimeters ≡ 3.3422935611342E-14 astronomical units |
| 2.5 millimeters ≡ 1.6711467805671E-14 astronomical units | 5.5 millimeters ≡ 3.6765229172476E-14 astronomical units |
| 3 millimeters ≡ 2.0053761366805E-14 astronomical units | 6 millimeters ≡ 4.0107522733611E-14 astronomical units |
| 1 astronomical units ≡ 1.495978707 × 1014 millimeters |
| 1 millimeters ≡ 6.6845871222684 × 10-15 astronomical units |