Convert Gigacuries to Curies
Convert Gigacuries (GCi) to Curies (Ci) instantly and accurately.
Conversion Formula
Ci = GCi × 1000000000
About Gigacuries
The gigacurie (GCi) equals 3.7 × 10¹⁹ Bq. The total fission product inventory of a 1 GWe nuclear power reactor at equilibrium is ~0.5 GCi; global spent fuel inventories worldwide exceed 10 GCi; total reactor-produced tritium in the world's oceans is estimated at ~1 GCi. 1 GCi = 3.7 × 10¹⁹ Bq.
About Curies
The curie (Ci) equals exactly 3.7 × 10¹⁰ Bq = 37 GBq, originally defined as the activity of 1 g of ²²⁶Ra. Still widely used in the US: ⁶⁰Co teletherapy sources are 5000-15000 Ci; ¹³⁷Cs blood irradiators are 1000-40000 Ci; NRC source licences for industrial radiography cite Ci limits. 1 Ci = 3.7 × 10¹⁰ Bq.
Quick Reference Table
| Gigacuries (GCi) | Curies (Ci) |
|---|---|
| 1 GCi | 1000000000 Ci |
| 2 GCi | 2 × 109 Ci |
| 5 GCi | 5 × 109 Ci |
| 10 GCi | 1 × 1010 Ci |
| 25 GCi | 2.5 × 1010 Ci |
| 50 GCi | 5 × 1010 Ci |
| 100 GCi | 1 × 1011 Ci |