Convert Troy Pounds to Megatons
Convert Troy Pounds (lb t) to Megatons (Mt) instantly and accurately.
Conversion Formula
Mt = lb t × 3.732417216e-10
About Troy Pounds
A troy pound (lb t) equals 12 troy ounces or 5,760 grains - approximately 373.24 grams. It is lighter than the common avoirdupois pound (453.59 g) because the troy system divides the pound into 12 ounces rather than 16. Historically used across Europe for trade in precious metals and pharmaceuticals, the troy pound was the legal standard in England from the 15th century until 1878. In the United States, the troy pound was once the official standard for coinage but was abolished for commercial use in 1828.
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
| Troy Pounds (lb t) | Megatons (Mt) |
|---|---|
| 1 lb t | 3.732 × 10-10 Mt |
| 2 lb t | 7.465 × 10-10 Mt |
| 5 lb t | 1.866 × 10-9 Mt |
| 10 lb t | 3.732 × 10-9 Mt |
| 25 lb t | 9.331 × 10-9 Mt |
| 50 lb t | 1.866 × 10-8 Mt |
| 100 lb t | 3.732 × 10-8 Mt |