Convert Parsecs to Gigameters
Convert Parsecs (pc) to Gigameters (Gm) instantly and accurately.
Conversion Formula
Gm = pc × 30856775.81
About Parsecs
A parsec (pc) is approximately 3.26 light years or 30.86 trillion kilometers, defined as the distance at which one astronomical unit subtends an angle of one arcsecond. Despite being less familiar than light years, parsecs are preferred by professional astronomers because they relate directly to stellar parallax measurements - the apparent shift in a star's position as Earth orbits the Sun. Most nearby stars are within a few dozen parsecs, our galaxy is about 30,000 parsecs across, and distant galaxies are measured in millions of parsecs (megaparsecs).
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.
Quick Reference Table
| Parsecs (pc) | Gigameters (Gm) |
|---|---|
| 1 pc | 30856800 Gm |
| 2 pc | 61713600 Gm |
| 5 pc | 154284000 Gm |
| 10 pc | 308568000 Gm |
| 25 pc | 771419000 Gm |
| 50 pc | 1.543 × 109 Gm |
| 100 pc | 3.086 × 109 Gm |