Convert Carats to Gigatons
Convert Carats (ct) to Gigatons (Gt) instantly and accurately.
Conversion Formula
Gt = ct × 2.000000000e-16
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 Gigatons
A gigaton (Gt) equals one billion metric tonnes (10¹² kg). It is the standard unit for planetary-scale mass measurements and global environmental budgets. Annual human CO₂ emissions are approximately 37 Gt CO₂; Earth's atmosphere contains roughly 5,480 Gt of air; Antarctic ice sheet mass is around 26,500,000 Gt of ice. Climate scientists report ice sheet mass balance changes in gigatons per year - the Greenland ice sheet loses approximately 280 Gt of ice annually due to climate change.
Quick Reference Table
| Carats (ct) | Gigatons (Gt) |
|---|---|
| 1 ct | 2 × 10-16 Gt |
| 2 ct | 4 × 10-16 Gt |
| 5 ct | 1 × 10-15 Gt |
| 10 ct | 2 × 10-15 Gt |
| 25 ct | 5 × 10-15 Gt |
| 50 ct | 1 × 10-14 Gt |
| 100 ct | 2 × 10-14 Gt |