Convert Megacuries to Curies
Convert Megacuries (MCi) to Curies (Ci) instantly and accurately.
Conversion Formula
Ci = MCi × 1000000
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.
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
| Megacuries (MCi) | Curies (Ci) |
|---|---|
| 1 MCi | 1000000 Ci |
| 2 MCi | 2000000 Ci |
| 5 MCi | 5000000 Ci |
| 10 MCi | 10000000 Ci |
| 25 MCi | 25000000 Ci |
| 50 MCi | 50000000 Ci |
| 100 MCi | 100000000 Ci |