Convert Earth Radius to Parsecs
Convert Earth Radius (R⊕) to Parsecs (pc) instantly and accurately.
Conversion Formula
pc = R⊕ × 2.067001439e-10
About Earth Radius
The Earth radius (R⊕) is approximately 6.371 million meters or 6,371 kilometers, representing the average distance from Earth's center to its surface. Due to Earth's rotation, it's slightly flattened, with the equatorial radius being about 21 km larger than the polar radius. This fundamental measurement is crucial in geology, geography, and astronomy for calculating Earth's circumference (about 40,000 km), surface area, and volume. It's also used as a comparative unit for describing other planets and exoplanets.
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).
Quick Reference Table
| Earth Radius (R⊕) | Parsecs (pc) |
|---|---|
| 1 R⊕ | 2.067 × 10-10 pc |
| 2 R⊕ | 4.134 × 10-10 pc |
| 5 R⊕ | 1.034 × 10-9 pc |
| 10 R⊕ | 2.067 × 10-9 pc |
| 25 R⊕ | 5.168 × 10-9 pc |
| 50 R⊕ | 1.034 × 10-8 pc |
| 100 R⊕ | 2.067 × 10-8 pc |