Convert Carats to Avoirdupois Drams
Convert Carats (ct) to Avoirdupois Drams (dr av) instantly and accurately.
Conversion Formula
dr av = ct × 0.1128766782
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.
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 While rarely used in modern commerce (having been replaced by grams in most applications), the avoirdupois dram still appears in some spice and herbalist contexts, in US gunpowder loading data (where charges are specified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
| Carats (ct) | Avoirdupois Drams (dr av) |
|---|---|
| 1 ct | 0.112877 dr av |
| 2 ct | 0.225753 dr av |
| 5 ct | 0.564383 dr av |
| 10 ct | 1.12877 dr av |
| 25 ct | 2.82192 dr av |
| 50 ct | 5.64383 dr av |
| 100 ct | 11.2877 dr av |