Convert Gigameters to Astronomical Units
Convert Gigameters (Gm) to Astronomical Units (AU) instantly and accurately.
Conversion Formula
AU = Gm × 0.006684587122
About Gigameters
A gigameter (Gm) is one billion meters (10⁹ m), making it useful for planetary measurements and inner solar system distances. The Sun's diameter is about 1.39 Gm, while Jupiter's diameter is roughly 0.14 Gm. The distance from Earth to the Moon is approximately 0.38 Gm. This unit bridges the gap between terrestrial measurements (megameters) and astronomical distances, providing a convenient scale for describing planetary sizes and nearby celestial distances in our solar system.
About Astronomical Units
An astronomical unit (AU) is the average distance between Earth and the Sun, precisely defined as 149,597,870.7 kilometers. This unit provides a convenient scale for measuring distances within our solar system. Mars orbits at 1.5 AU, Jupiter at 5.2 AU, and Neptune at about 30 AU from the Sun. The dwarf planet Pluto reaches up to 49 AU away. Light takes about 8.3 minutes to travel 1 AU, explaining why we see the Sun as it was 8 minutes ago. The AU is fundamental in astronomy and space exploration.
Quick Reference Table
| Gigameters (Gm) | Astronomical Units (AU) |
|---|---|
| 1 Gm | 0.00668459 AU |
| 2 Gm | 0.0133692 AU |
| 5 Gm | 0.0334229 AU |
| 10 Gm | 0.0668459 AU |
| 25 Gm | 0.167115 AU |
| 50 Gm | 0.334229 AU |
| 100 Gm | 0.668459 AU |