The pennyweight conversion selector on this page selects the mass/weight measurement unit to convert to starting from pennyweights (dwt). To make a conversion starting from a unit of mass other than pennyweight, simply click on the "Reset" button.
The pennyweight is a unit of mass in the US customary system of units equal to 0.00155517384 kilograms (1 dwt = 0.00155517384 kg), the base unit of mass in the International System of Units (SI).
The pennyweight (dwt) is also equal to 1.55517384 grams (g), or 1,555.17384 milligrams (mg) or 1.55517384 × 106 micrograms (μg) (SI units of mass), or 24 grains (gr), or 0.004166 troy pounds (lb t) or 0.05 troy ounces (oz t), which are US customary / Imperial units of mass.
The pennyweight is used as a unit of mass for precious metals such as gold, silver and platinum.