Convert Avoirdupois Drams to Troy Pounds
Convert Avoirdupois Drams (dr av) to Troy Pounds (lb t) instantly and accurately.
Conversion Formula
lb t = dr av × 0.004747178819
About Avoirdupois Drams
An avoirdupois dram (dr av) is 1/16 of an avoirdupois ounce - approximately 1.772 grams. Part of the avoirdupois system that governs everyday trade weights in the UK and US, it was historically used to measure small quantities of goods and spices in commerce. While rarely used in modern commerce (having been replaced by grams in most applications), the avoirdupois dram still appears in some spice and herbalist contexts, in US gunpowder loading data (where charges are specified in grains and drams), and in archaic recipe books.
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
| Avoirdupois Drams (dr av) | Troy Pounds (lb t) |
|---|---|
| 1 dr av | 0.00474718 lb t |
| 2 dr av | 0.00949436 lb t |
| 5 dr av | 0.0237359 lb t |
| 10 dr av | 0.0474718 lb t |
| 25 dr av | 0.118679 lb t |
| 50 dr av | 0.237359 lb t |
| 100 dr av | 0.474718 lb t |