astronomical unit
| Symbol: | AU, UA |
| Category: | Length |
| SI Equivalent: | 1.49598×1011 m |
| Dimension: | L |
| Notes | |
| Equal to the mean distance between the earth and the sun, this unit of length is usually employed in astronomy for describing planetary distances. It was adopted by the International Astronomical Union in 1964. | |
95 conversions, showing those commonly used | Show all
1 AU, UA =
| Length | ||
| Symbol | Unit Name | |
| 1.49598×1021 | Å | angstrom |
| 1.49598×1029 | am | attometer |
| 1.49598×1013 | cm | centimeter |
| 4.90807×1011 | ft | foot |
| 1.49598×109 | hm | hectometer |
| 5.88968×1012 | in | inch |
| 1.49598×108 | km | kilometer |
| 1.58128×10-5 | ly | light-year |
| 1.49598×1011 | m | meter |
| 5.88968×1018 | µin | microinch |
| 1.49598×1017 | µm | micron |
| 5.88968×1015 | mil, thou | mil (thou) |
| 9.29558×107 | mi (stat.) | mile (statute, land) |
| 1.49598×1014 | mm | millimeter |
| 1.49598×1020 | nm | nanometer |
| 8.07764×107 | mi (int. naut.) | nautical mile (international) |
| 4.84814×10-6 | pc | parsec |
| 1.49598×1023 | pm | picometer |
| 1.63602×1011 | yd | yard |
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