Convert Megatons to Long Hundredweights
Convert Megatons (Mt) to Long Hundredweights (long cwt) instantly and accurately.
Conversion Formula
long cwt = Mt × 19684130.55
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.
About Long Hundredweights
A long hundredweight (long cwt) equals 112 pounds or approximately 50.802 kg - equal to 8 stone. The standard hundredweight in the United Kingdom and much of its historical trading sphere, it reflects the medieval English stone of 14 lb (8 × 14 = 112). British agricultural commodity prices, wool trade records, and livestock market reports historically used long hundredweights. The UK meat trade still occasionally references hundredweights in wholesale pricing.
Quick Reference Table
| Megatons (Mt) | Long Hundredweights (long cwt) |
|---|---|
| 1 Mt | 19684100 long cwt |
| 2 Mt | 39368300 long cwt |
| 5 Mt | 98420700 long cwt |
| 10 Mt | 196841000 long cwt |
| 25 Mt | 492103000 long cwt |
| 50 Mt | 984207000 long cwt |
| 100 Mt | 1.968 × 109 long cwt |