How many gigameter in 1 astronomical units? 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 astronomical units The SI base unit for length is the metre. 1 metre is equal to 1.0E-9 gigameter, or 6.6845871222684E-12 astronomical units. 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 astronomical units = 0.00668 astronomical units
10 gigameter to astronomical units = 0.06685 astronomical units
50 gigameter to astronomical units = 0.33423 astronomical units
100 gigameter to astronomical units = 0.66846 astronomical units
200 gigameter to astronomical units = 1.33692 astronomical units
500 gigameter to astronomical units = 3.34229 astronomical units
1000 gigameter to astronomical units = 6.68459 astronomical units
You can do the reverse unit conversion from astronomical units 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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