Astronomical unit conversions
The astronomical unit conversion selector selects the length/distance measurement unit to convert to starting from astronomical units (AU). To make a conversion starting from a unit of length other than astronomical unit, simply click on the "Reset" button.
About astronomical unit
The astronomical unit is a unit of distance used in astronomy equal to approximately 149,597,870.7 × 103 meters (1 AU ≈ 149.60 × 109 m), the base unit of length in the International System of Units (SI).
One astronomical unit (AU) is also equal to approximately 149.60 × 106 kilometers (km) (an SI unit of length), or 92.956 × 106 miles (mi), or 490.81 × 109 feet (ft) or 1.636 × 1011 yards (yd), which are US customary / Imperial units of length.
The astronomical unit is an approximate astronomical measurement unit of distance as it depends on the heliocentric gravitational constant which is the product of the gravitational constant G and the solar mass. Neither the gravitational constant nor the solar mass can be measured to high accuracy in SI units.
Common astronomical measurement units include the parsec (1 AU ≈ 4.8481 × 10-6 pc) and the light-year (1 AU ≈ 15.813 × 10-6 ly).
Symbol: AU
Plural: astronomical units
Astronomical unit conversions: a compehensive list with conversions from astronomical units to other (metric, imperial, or customary) length and distance measurement units is displayed below.
- astronomical unit to angstrom (AU to Å)
- astronomical unit to Bohr radius (AU to a0)
- astronomical unit to cable (International)
- astronomical unit to cable (UK)
- astronomical unit to cable (US)
- astronomical unit to centimeter (AU to cm)
- astronomical unit to chain (AU to ch)
- astronomical unit to cubit
- astronomical unit to decameter (AU to dam)
- astronomical unit to decimeter (AU to dm)
- astronomical unit to Earth radius (AU to RE)
- astronomical unit to Earth-Moon distance
- astronomical unit to Earth-Sun distance
- astronomical unit to fathom (AU to ftm)
- astronomical unit to femtometer (AU to fm)
- astronomical unit to fermi (AU to fm)
- astronomical unit to foot (AU to ft)
- astronomical unit to furlong (AU to fur)
- astronomical unit to hectometer (AU to hm)
- astronomical unit to inch (AU to in)
- astronomical unit to kilometer (AU to km)
- astronomical unit to league (AU to lea)
- astronomical unit to light-day
- astronomical unit to light-hour
- astronomical unit to light-minute
- astronomical unit to light-second
- astronomical unit to light-year (AU to ly)
- astronomical unit to meter (AU to m)
- astronomical unit to micrometer (AU to μm)
- astronomical unit to micron (AU to μ)
- astronomical unit to mil
- astronomical unit to mile (AU to mi)
- astronomical unit to millimeter (AU to mm)
- astronomical unit to nanometer (AU to nm)
- astronomical unit to nautical league
- astronomical unit to nautical mile (AU to nmi)
- astronomical unit to parsec (AU to pc)
- astronomical unit to picometer (AU to pm)
- astronomical unit to Plank length
- astronomical unit to quarter
- astronomical unit to rod (AU to rd)
- astronomical unit to yard (AU to yd)