Pennyweight
A pennyweight (symbol dwt) is an obsolete unit of mass which is the same as 24 grains, 1/240th of a troy pound, 1/20th of a troy ounce, or approximately 1.555 grams. A penny coin was literally, as well as monetarily, 1/240th of a troy pound of sterling silver.
Metric
- Ton (t)1.56×10⁻⁶
- Kilonewton (kN)1.53×10⁻⁵
- Kilogram (kg)1.56×10⁻³
- Hectogram (hg)0.02
- Decagram (dag)0.16
- Gram (g)1.56
- Carat7.78
- Centigram155.53
- Milligram (mg)1,555.33
- Microgram (µg)1,555,329.45
- Nanogram (ng)1.56×10⁹
- Atomic mass unit (u)9.37×10²³
Avoirdupois (U.S.)
- Long ton1.53×10⁻⁶
- Short ton1.71×10⁻⁶
- Long hundredweight3.06×10⁻⁵
- Short hundredweight3.43×10⁻⁵
- Stone2.45×10⁻⁴
- Pound (lb)3.43×10⁻³
- Ounce0.05
- Dram (dr)0.88
- Grain (gr)24