The parsec conversion selector selects the length/distance measurement unit to convert to starting from parsecs (pc). To make a conversion starting from a unit of length other than parsec, simply click on the "Reset" button.
The parsec is a unit of length used in astronomy equal to approximately 3.0857 × 1016 meters (1 pc ≈ 3.0857 × 1016 m), the base unit of length in the International System of Units (SI).
The parsec (pc) is also equal to about 30.857 × 1012 kilometers (km) (an SI unit of length), or nearly 19.174 × 1012 miles (mi) or 101.24 × 1015 feet (ft), which are US customary / Imperial units of length.
Common astronomical measurement units include the astronomical unit (1 parsec = 206.26 × 103 AU) and the light-year (1 parsec = 3.26156 ly).