Convert Gigatons to Kilotonnes
Convert Gigatons (Gt) to Kilotonnes (kt) instantly and accurately.
Conversion Formula
kt = Gt × 1000000
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.
About Kilotonnes
A kilotonne (kt) equals 1,000 metric tonnes (10⁶ kg). In military and geopolitical contexts, nuclear weapon yields are expressed in kilotons of TNT equivalent (kt TNT): the atomic bomb dropped on Hiroshima had a yield of approximately 15 kt TNT. Environmental science uses kilotonnes for reporting regional greenhouse gas inventories, industrial pollutant releases, and annual waste generation. Mining operations quote ore extraction rates in kilotonnes per day. The global atmospheric inventory of various trace gases is reported in kilotonnes.
Quick Reference Table
| Gigatons (Gt) | Kilotonnes (kt) |
|---|---|
| 1 Gt | 1000000 kt |
| 2 Gt | 2000000 kt |
| 5 Gt | 5000000 kt |
| 10 Gt | 10000000 kt |
| 25 Gt | 25000000 kt |
| 50 Gt | 50000000 kt |
| 100 Gt | 100000000 kt |