Convert Avoirdupois Drams to Megatons
Convert Avoirdupois Drams (dr av) to Megatons (Mt) instantly and accurately.
Conversion Formula
Mt = dr av × 1.771845195e-12
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 While rarely used in modern commerce (having been replaced by grams in most applications), the avoirdupois dram still appears in some spice and herbalist contexts, in US gunpowder loading data (where charges are specified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 Megatons
A megaton (Mt) equals one million metric tonnes (10⁹ kg). Nuclear weapon yields are measured in megatons of TNT equivalent: the largest weapon ever detonated, the Soviet Tsar Bomba tested in 1961, had a yield of approximately 50 Mt TNT and produced a fireball 8 km in diameter. Annual global CO₂ emissions are reported in gigatons (Gt), but regional emissions data and specific industrial sectors are quoted in megatons. The Chicxulub asteroid impact that caused the Cretaceous-Paleogene mass extinction released energy equivalent to roughly 100 million Mt of TNT.
Quick Reference Table
| Avoirdupois Drams (dr av) | Megatons (Mt) |
|---|---|
| 1 dr av | 1.772 × 10-12 Mt |
| 2 dr av | 3.544 × 10-12 Mt |
| 5 dr av | 8.859 × 10-12 Mt |
| 10 dr av | 1.772 × 10-11 Mt |
| 25 dr av | 4.43 × 10-11 Mt |
| 50 dr av | 8.859 × 10-11 Mt |
| 100 dr av | 1.772 × 10-10 Mt |