Convert Carats to Megatons
Convert Carats (ct) to Megatons (Mt) instantly and accurately.
Conversion Formula
Mt = ct × 2.000000000e-13
About Carats
A metric carat (ct or CD) is exactly 200 milligrams (0.2 g), the universal standard for weighing gemstones. Established internationally in 1907, it replaced fractionally different regional carat weights previously used in different countries. The total weight of a diamond or colored gemstone is always expressed in carats: a 1.00 ct diamond of excellent cut and color can command over $5,000. The Cullinan diamond, the largest gem-quality rough diamond ever found, weighed 3,106.75 carats.
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
| Carats (ct) | Megatons (Mt) |
|---|---|
| 1 ct | 2 × 10-13 Mt |
| 2 ct | 4 × 10-13 Mt |
| 5 ct | 1 × 10-12 Mt |
| 10 ct | 2 × 10-12 Mt |
| 25 ct | 5 × 10-12 Mt |
| 50 ct | 1 × 10-11 Mt |
| 100 ct | 2 × 10-11 Mt |