Convert Megatons to Stones
Convert Megatons (Mt) to Stones (st) instantly and accurately.
Conversion Formula
st = Mt × 157473044.4
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 Stones
A stone (st) equals 14 pounds or approximately 6.350 kg. It is the standard unit for expressing human body weight in the United Kingdom and Ireland, where a person will say they weigh '11 stone 4' (meaning 11 stone and 4 pounds, or 158 lb / 71.7 kg). Despite the UK's official adoption of the metric system, stones remain the dominant unit for personal body weight on British bathroom scales, in doctors' offices, and in everyday conversation. British newspapers and sports reports routinely describe athletes' weights in stones and pounds.
Quick Reference Table
| Megatons (Mt) | Stones (st) |
|---|---|
| 1 Mt | 157473000 st |
| 2 Mt | 314946000 st |
| 5 Mt | 787365000 st |
| 10 Mt | 1.575 × 109 st |
| 25 Mt | 3.937 × 109 st |
| 50 Mt | 7.874 × 109 st |
| 100 Mt | 1.575 × 1010 st |