Convert Megameters to Astronomical Units
Convert Megameters (Mm) to Astronomical Units (AU) instantly and accurately.
Conversion Formula
AU = Mm × 6.684587122e-6
About Megameters
A megameter (Mm) is one million meters (10⁶ m), a unit suitable for measuring continental distances and planetary features. Earth's diameter is about 12.7 Mm, while the distance from New York to Los Angeles is roughly 4 Mm. The deepest part of the ocean (Mariana Trench) is about 0.011 Mm deep. This unit helps scientists and geographers express large terrestrial distances without using thousands of kilometers, making calculations and comparisons more manageable in Earth sciences.
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
| Megameters (Mm) | Astronomical Units (AU) |
|---|---|
| 1 Mm | 6.685 × 10-6 AU |
| 2 Mm | 1.337 × 10-5 AU |
| 5 Mm | 3.342 × 10-5 AU |
| 10 Mm | 6.685 × 10-5 AU |
| 25 Mm | 0.000167115 AU |
| 50 Mm | 0.000334229 AU |
| 100 Mm | 0.000668459 AU |