Convert Avoirdupois Drams to Carats
Convert Avoirdupois Drams (dr av) to Carats (ct) instantly and accurately.
Conversion Formula
ct = dr av × 8.859225977
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 While rarely used in modern commerce (having been replaced by grams in most applications), the avoirdupois dram still appears in some spice and herbalist contexts, in US gunpowder loading data (where charges are specified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 Carats
A metric carat (ct or CD) is exactly 200 milligrams (0.2 g), the universal standard for weighing gemstones. Established internationally in 1907, it replaced fractionally different regional carat weights previously used in different countries. The total weight of a diamond or colored gemstone is always expressed in carats: a 1.00 ct diamond of excellent cut and color can command over $5,000. The Cullinan diamond, the largest gem-quality rough diamond ever found, weighed 3,106.75 carats.
Quick Reference Table
| Avoirdupois Drams (dr av) | Carats (ct) |
|---|---|
| 1 dr av | 8.85923 ct |
| 2 dr av | 17.7185 ct |
| 5 dr av | 44.2961 ct |
| 10 dr av | 88.5923 ct |
| 25 dr av | 221.481 ct |
| 50 dr av | 442.961 ct |
| 100 dr av | 885.923 ct |