Convert Avoirdupois Drams to Gigatons
Convert Avoirdupois Drams (dr av) to Gigatons (Gt) instantly and accurately.
Conversion Formula
Gt = dr av × 1.771845195e-15
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 While rarely used in modern commerce (having been replaced by grams in most applications), the avoirdupois dram still appears in some spice and herbalist contexts, in US gunpowder loading data (where charges are specified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 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
| Avoirdupois Drams (dr av) | Gigatons (Gt) |
|---|---|
| 1 dr av | 1.772 × 10-15 Gt |
| 2 dr av | 3.544 × 10-15 Gt |
| 5 dr av | 8.859 × 10-15 Gt |
| 10 dr av | 1.772 × 10-14 Gt |
| 25 dr av | 4.43 × 10-14 Gt |
| 50 dr av | 8.859 × 10-14 Gt |
| 100 dr av | 1.772 × 10-13 Gt |