Convert Millicuries to Megacuries
Convert Millicuries (mCi) to Megacuries (MCi) instantly and accurately.
Conversion Formula
MCi = mCi × 1.000000000e-9
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.
About Megacuries
The megacurie (MCi) equals 3.7 × 10¹⁶ Bq. Total radioactive inventory of a large nuclear power reactor core at shutdown is ~2000-10000 MCi; US atmospheric nuclear weapons tests released ~12000 MCi of ¹³¹I globally; high-level nuclear waste repositories are characterised in MCi. 1 MCi = 3.7 × 10¹⁶ Bq.
Quick Reference Table
| Millicuries (mCi) | Megacuries (MCi) |
|---|---|
| 1 mCi | 1 × 10-9 MCi |
| 2 mCi | 2 × 10-9 MCi |
| 5 mCi | 5 × 10-9 MCi |
| 10 mCi | 1 × 10-8 MCi |
| 25 mCi | 2.5 × 10-8 MCi |
| 50 mCi | 5 × 10-8 MCi |
| 100 mCi | 1 × 10-7 MCi |