Kilometers to Astronomical Units - Convert km to au

Kilometers (km) Conversion

A kilometer is a metric unit of length or distance which equals exactly 1000 meters and about 0.62137119 mile, 1093.6133 yards, or 3280.8399 feet. It is an official measurement which signifies geographical distances in most of the world except for the United States (they use the mile). Even huge distances to the farthest galaxies are expressed in kilometers, not in higher multiples of the meter.

Astronomical Units (au) Conversion

Astronomical unit is a unit of length which describes the average distance between the Earth and the sun and is used to measure distances in the Solar system. This unit is accepted by the SI system. The exact numbers vary as Earth orbits the Sun from a maximum (aphelion) to a minimum (perihelion). Since 2012, the Astronomical unit has been defined as exactly equal to 149597870700 meters or about 150 million kilometers (93 million miles).