Bookmark
Bookmark this page to your browser, or copy this link to your site:
Measurement unit conversion: astronomical unit
Full name: astronomical unit
Plural form: astronomical units
Symbol: AU
Category type: length
Scale factor: 149597870691
The SI base unit for length is the meter.
1 meter is equal to 6.68458712267E-12 astronomical unit.
Valid units must be of the length type.
You can use this form to select from known units:
I'm feeling lucky, show me some random units
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".
Weight loss info
Lose 9 lbs in 11 days. Low fat and low carb diets don't work.
Learn about calorie shifting and get 50% off the
online diet generator.
Support this site
If this page was helpful, please
donate
a small amount or advertise
on the site. If you are a regular visitor, you might prefer to
remove most ads.
You can also contact us
if you have any comments or suggestions.
