Convert Quarters to Avoirdupois Drams
Convert Quarters (qr) to Avoirdupois Drams (dr av) instantly and accurately.
Conversion Formula
dr av = qr × 7168
About Quarters
A quarter (qr) in the avoirdupois system equals 28 pounds or one quarter of a hundredweight - approximately 12.70 kg. Historically, quarters were used in British trade for measuring grain, wool, and other bulk commodities. The British quarter of grain (28 lb) was the standard purchase quantity at markets and mills throughout medieval and early modern England. In the US, the term 'quarter' sometimes refers to a quarter of a short hundredweight (25 lb) rather than the British 28 lb.
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 While rarely used in modern commerce (having been replaced by grams in most applications), the avoirdupois dram still appears in some spice and herbalist contexts, in US gunpowder loading data (where charges are specified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
| Quarters (qr) | Avoirdupois Drams (dr av) |
|---|---|
| 1 qr | 7168 dr av |
| 2 qr | 14336 dr av |
| 5 qr | 35840 dr av |
| 10 qr | 71680 dr av |
| 25 qr | 179200 dr av |
| 50 qr | 358400 dr av |
| 100 qr | 716800 dr av |