Convert Curies to Petabecquerels
Convert Curies (Ci) to Petabecquerels (PBq) instantly and accurately.
Conversion Formula
PBq = Ci × 3.700000000e-5
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.
About Petabecquerels
The petabecquerel (PBq) equals 10¹⁵ Bq. The Chernobyl accident (1986) released ~5200 PBq of noble gases and ~1760 PBq of ¹³¹I; Fukushima Daiichi (2011) released 400-900 PBq ¹³¹I-equivalent; global ⁸⁵Kr inventory from nuclear operations is ~1300 PBq. 1 PBq = 10¹⁵ Bq = 10³ TBq.
Quick Reference Table
| Curies (Ci) | Petabecquerels (PBq) |
|---|---|
| 1 Ci | 3.7 × 10-5 PBq |
| 2 Ci | 7.4 × 10-5 PBq |
| 5 Ci | 0.000185 PBq |
| 10 Ci | 0.00037 PBq |
| 25 Ci | 0.000925 PBq |
| 50 Ci | 0.00185 PBq |
| 100 Ci | 0.0037 PBq |