Convert Gigameters to Megaparsecs
Convert Gigameters (Gm) to Megaparsecs (Mpc) instantly and accurately.
Conversion Formula
Mpc = Gm × 3.240779289e-14
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 Megaparsecs
A megaparsec (Mpc) is one million parsecs or 3.26 million light years, the standard unit for measuring intergalactic distances. The Andromeda Galaxy is about 0.77 megaparsecs away, while most galaxies in the observable universe are measured in megaparsecs. The Local Group of galaxies spans about 3 megaparsecs. Astronomers use megaparsecs in combination with redshift measurements to calculate distances to distant galaxies and study the expansion of the universe. The Hubble constant, describing cosmic expansion, is expressed in kilometers per second per megaparsec.
Quick Reference Table
| Gigameters (Gm) | Megaparsecs (Mpc) |
|---|---|
| 1 Gm | 3.241 × 10-14 Mpc |
| 2 Gm | 6.482 × 10-14 Mpc |
| 5 Gm | 1.62 × 10-13 Mpc |
| 10 Gm | 3.241 × 10-13 Mpc |
| 25 Gm | 8.102 × 10-13 Mpc |
| 50 Gm | 1.62 × 10-12 Mpc |
| 100 Gm | 3.241 × 10-12 Mpc |