Convert Milligrams to Apothecary Drams
Convert Milligrams (mg) to Apothecary Drams (dr ap) instantly and accurately.
Conversion Formula
dr ap = mg × 0.0002572059725
About Milligrams
A milligram (mg) is one thousandth of a gram (10⁻³ g). It is the primary unit for pharmaceutical dosing: aspirin tablets are typically 500 mg, ibuprofen 200-400 mg, and melatonin supplements 0.5-10 mg. Precious metal assay results and alloy compositions are specified in milligrams per kilogram (mg/kg = ppm). Nutritional labels worldwide list mineral content in milligrams - the recommended daily intake of iron is 8-18 mg, calcium 1000 mg, and sodium under 2300 mg. A grain of rice weighs about 25-30 mg, and a medium eyelash approximately 0.1 mg.
About Apothecary Drams
An apothecary dram (dr ap) equals 3 scruples or 60 grains - approximately 3.888 grams. Part of the traditional apothecary system used by physicians and pharmacists from the Middle Ages through the 19th century, it was the standard unit for prescribing and dispensing medicines. Prescriptions written in the apothecary system used special symbols: the dram symbol (℈) and ounce symbol (℥) appear throughout historical medical records and old pharmacy ledgers. The apothecary dram differs from the fluid dram (a volume unit) and from the avoirdupois dram.
Quick Reference Table
| Milligrams (mg) | Apothecary Drams (dr ap) |
|---|---|
| 1 mg | 0.000257206 dr ap |
| 2 mg | 0.000514412 dr ap |
| 5 mg | 0.00128603 dr ap |
| 10 mg | 0.00257206 dr ap |
| 25 mg | 0.00643015 dr ap |
| 50 mg | 0.0128603 dr ap |
| 100 mg | 0.0257206 dr ap |