Go the distance with easy unit conversions. Whether you're measuring in miles or meters, kilometers or yards, our tool helps you cross the finish line without breaking stride.
An astronomical unit (AU) is a unit of length used in astronomy, representing the average distance between the Earth and the Sun, approximately 149.6 million kilometers (about 93 million miles).
A light year (ly) is a unit of length used in astronomy, representing the distance that light travels in one year through a vacuum, approximately 9.461 trillion kilometers (about 5.879 trillion miles).