Convert Gigacuries to Millicuries
Convert Gigacuries (GCi) to Millicuries (mCi) instantly and accurately.
Conversion Formula
mCi = GCi × 1000000000000
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 Millicuries
The millicurie (mCi) equals 3.7 × 10⁷ Bq = 37 MBq. The primary clinical nuclear medicine unit in the US: ¹⁸F-FDG PET doses are 8-15 mCi; ⁹⁹mTc cardiac stress tests use 25-35 mCi; ¹³¹I hyperthyroidism therapy uses 5-30 mCi. US pharmacopeia and NRC regulations specify doses in mCi. 1 mCi = 3.7 × 10⁷ Bq.
Quick Reference Table
| Gigacuries (GCi) | Millicuries (mCi) |
|---|---|
| 1 GCi | 1 × 1012 mCi |
| 2 GCi | 2 × 1012 mCi |
| 5 GCi | 5 × 1012 mCi |
| 10 GCi | 1 × 1013 mCi |
| 25 GCi | 2.5 × 1013 mCi |
| 50 GCi | 5 × 1013 mCi |
| 100 GCi | 1 × 1014 mCi |