Convert Apothecary Drams to Gigatons
Convert Apothecary Drams (dr ap) to Gigatons (Gt) instantly and accurately.
Conversion Formula
Gt = dr ap × 3.887934600e-15
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.
About Gigatons
A gigaton (Gt) equals one billion metric tonnes (10¹² kg). It is the standard unit for planetary-scale mass measurements and global environmental budgets. Annual human CO₂ emissions are approximately 37 Gt CO₂; Earth's atmosphere contains roughly 5,480 Gt of air; Antarctic ice sheet mass is around 26,500,000 Gt of ice. Climate scientists report ice sheet mass balance changes in gigatons per year - the Greenland ice sheet loses approximately 280 Gt of ice annually due to climate change.
Quick Reference Table
| Apothecary Drams (dr ap) | Gigatons (Gt) |
|---|---|
| 1 dr ap | 3.888 × 10-15 Gt |
| 2 dr ap | 7.776 × 10-15 Gt |
| 5 dr ap | 1.944 × 10-14 Gt |
| 10 dr ap | 3.888 × 10-14 Gt |
| 25 dr ap | 9.72 × 10-14 Gt |
| 50 dr ap | 1.944 × 10-13 Gt |
| 100 dr ap | 3.888 × 10-13 Gt |