›› Convert span to astronomical unit


span
astronomical unit


›› More information from the unit converter

How many span in 1 astronomical unit? The answer is 654408883162.73.
We assume you are converting between span and astronomical unit.
You can view more details on each measurement unit:
span or astronomical unit
The SI base unit for length is the metre.
1 metre is equal to 4.3744531933508 span, or 6.6845871226706E-12 astronomical unit.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between span and astronomical units.
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›› Common length conversions

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›› Definition: Astronomical unit

The astronomical unit (AU or au or a.u. or sometimes ua) is a unit of length. It is approximately equal to the mean distance between the Earth and Sun. The currently accepted value of the AU is 149 597 870 691 ± 30 metres (about 150 million kilometres or 93 million miles).

The symbol "ua" is recommended by the Bureau International des Poids et Mesures, but in the United States and other anglophone countries the reverse usage is more common. The International Astronomical Union recommends "au" and international standard ISO 31-1 uses "AU".


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