Convert Sun's Mass (M☉) to Pennyweight (pwt) instantly.
About these units
Sun's Mass (M☉)
The Sun's mass, approximately 1.9885 × 10³⁰ kilograms, dominates the solar system, comprising 99.86% of all its mass. Solar mass controls planetary orbits, defines the structure of the heliosphere, and fuels stellar fusion reactions that sustain life on Earth. Astronomers use the solar mass as a comparative unit for other stars, star clusters, and black holes, making it one of the most important astronomical constants.
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.