Convert Pounds to Avoirdupois Drams
Convert Pounds (lb) to Avoirdupois Drams (dr av) instantly and accurately.
Conversion Formula
dr av = lb × 256
About Pounds
The avoirdupois pound (lb) is the primary unit of weight in the United States and United Kingdom for everyday use, equal to 16 ounces or exactly 453.59237 grams. It dominates American life: body weight, grocery produce, deli counter cuts, freight shipping costs, gym weights, and building material quantities are all measured in pounds and ounces. American recipes use pounds for meat and large quantities. The pound derives from the Roman 'libra pondo' (a pound by weight) - hence both the symbol 'lb' (from libra) and the British currency symbol '£'.
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 While rarely used in modern commerce (having been replaced by grams in most applications), the avoirdupois dram still appears in some spice and herbalist contexts, in US gunpowder loading data (where charges are specified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.
Quick Reference Table
| Pounds (lb) | Avoirdupois Drams (dr av) |
|---|---|
| 1 lb | 256 dr av |
| 2 lb | 512 dr av |
| 5 lb | 1280 dr av |
| 10 lb | 2560 dr av |
| 25 lb | 6400 dr av |
| 50 lb | 12800 dr av |
| 100 lb | 25600 dr av |