Convert Pennyweights to Troy Pounds
Convert Pennyweights (dwt) to Troy Pounds (lb t) instantly and accurately.
Conversion Formula
lb t = dwt × 0.004166666667
About Pennyweights
A pennyweight (dwt or pwt) equals 24 grains or 1/20 of a troy ounce - approximately 1.555 grams. Its name derives from the weight of an English silver penny in the medieval period. Pennyweights are the standard unit used by jewellers and goldsmiths in North America for weighing precious metals: gold, silver, and platinum. When a jeweller quotes the gold weight of a ring or chain, they typically use pennyweights. Gold buyers, refiners, and scrap metal dealers quote prices per pennyweight (often abbreviated 'DWT') when appraising jewellery.
About Troy Pounds
A troy pound (lb t) equals 12 troy ounces or 5,760 grains - approximately 373.24 grams. It is lighter than the common avoirdupois pound (453.59 g) because the troy system divides the pound into 12 ounces rather than 16. Historically used across Europe for trade in precious metals and pharmaceuticals, the troy pound was the legal standard in England from the 15th century until 1878. In the United States, the troy pound was once the official standard for coinage but was abolished for commercial use in 1828.
Quick Reference Table
| Pennyweights (dwt) | Troy Pounds (lb t) |
|---|---|
| 1 dwt | 0.00416667 lb t |
| 2 dwt | 0.00833333 lb t |
| 5 dwt | 0.0208333 lb t |
| 10 dwt | 0.0416667 lb t |
| 25 dwt | 0.104167 lb t |
| 50 dwt | 0.208333 lb t |
| 100 dwt | 0.416667 lb t |