Astronomical unit
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| SI units | |
|---|---|
| 149.60×106 km | 149.60×109 m |
| Astronomical units | |
| 4.8481×10-6 pc | 15.813×10−6 ly}} |
| US customary / Imperial units | |
| 92.956×106 mi | 490.81×109 ft |
The astronomical unit (AU or au or a.u. or sometimes ua) is a unit of length approximately equal to the distance from the Earth to the Sun. The currently accepted value of the AU is 149,597,870,691 ± 30 metres (about 150 million kilometres or 93 million miles).
