Convert Pennyweight (pwt) to Earth's Mass (M⊕) instantly.
About these units
Pennyweight (pwt)
The pennyweight, equal to 1/20 of a troy ounce or 1.55517384 grams, is a unit used primarily in the precious metals and jewelry industries. Its origins lie in medieval English coinage, when the weight of silver pennies provided a practical standard for small masses. Jewelers continue to use the pennyweight because many traditional pricing structures and metalworking conventions are built around troy-based subdivisions. For gold, silver, and dental alloys, the pennyweight remains easier to work with than grams due to long-established norms. Even though the metric system is now dominant scientifically, the pennyweight persists because industries tied to history—especially those involving money and precious goods—tend to maintain deeply rooted practices.
Earth's Mass (M⊕)
Earth's mass is approximately 5.972 × 10²⁴ kilograms, a fundamental parameter in planetary science and orbital mechanics. It governs Earth's gravitational interaction with the Moon, Sun, and artificial satellites and shapes geological processes such as plate tectonics and atmospheric retention. Planetary scientists use Earth masses to compare exoplanets, enabling quick insights into habitability, composition, and gravitational characteristics.