How many gigameter in 1 au? The answer is 149.5978707. We assume you are converting between gigametre and astronomical unit. You can view more details on each measurement unit: gigameter or au The SI base unit for length is the metre. 1 metre is equal to 1.0E-9 gigameter, or 6.6845871222684E-12 au. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between gigameters and astronomical units. Type in your own numbers in the form to convert the units!
1 gigameter to au = 0.00668 au
10 gigameter to au = 0.06685 au
50 gigameter to au = 0.33423 au
100 gigameter to au = 0.66846 au
200 gigameter to au = 1.33692 au
500 gigameter to au = 3.34229 au
1000 gigameter to au = 6.68459 au
You can do the reverse unit conversion from au to gigameter, or enter any two units below:
A gigametre (American spelling: gigameter, symbol: Gm) is a unit of length equal to 10^9 metres. Its customary equivalent is 621,371 miles.
The astronomical unit (AU or au or a.u. or sometimes ua) is a unit of length defined to be exactly equal to 149,597,870,700 metres. Historically, the astronomical unit was conceived as the average Earth-Sun distance (the average of Earth's aphelion and perihelion), before its modern redefinition.
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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