Calculadora de Unidade Astronômica

The Astronomical Unit (AU) Calculator converts values in Astronomical Units to kilometers and light-years. The Astronomical Unit is defined as the average distance between Earth and the Sun, approximately 1.496×10¹¹ meters (about 150 million kilometers). This tool uses this constant to perform accurate conversions, making it easier to understand distances in the Solar System and beyond.

The operation is simple: enter a value in AU and the calculator returns the equivalent in kilometers and light-years. The conversion to kilometers multiplies the AU value by 149,597,870.7 km. For light-years, it divides the kilometer value by 9.461×10¹² km (the distance light travels in one year). This allows intuitive comparison of astronomical distances.

Use this calculator to plan space missions, study planetary orbits, or understand the scale of the Solar System. For example, Jupiter's distance from the Sun is about 5.2 AU, equivalent to approximately 778 million km. Amateur astronomers and students can better visualize proportions between planets and nearby stars.

Caution: the definition of AU was standardized in 2012 by the International Astronomical Union as exactly 149,597,870.7 km. Make sure to use precise values for scientific calculations. Remember that light-years measure distance, not time; sunlight takes about 8.3 minutes to reach Earth (0.0000158 AU). This tool does not consider relativistic effects or orbital variations.