Convert Curies to Microbecquerels
Convert Curies (Ci) to Microbecquerels (µBq) instantly and accurately.
Conversion Formula
µBq = Ci × 3.700000000e+16
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 Microbecquerels
The microbecquerel (µBq) equals 10⁻⁶ Bq. Nuclear power plant effluent monitoring reports ¹³⁷Cs and ⁹⁰Sr in air and water at µBq/m³; dietary ²¹⁰Po intake from seafood consumption is assessed at µBq per daily serving in food safety surveys. 1 µBq = 10⁻⁶ Bq = 10⁻³ mBq.
Quick Reference Table
| Curies (Ci) | Microbecquerels (µBq) |
|---|---|
| 1 Ci | 3.7 × 1016 µBq |
| 2 Ci | 7.4 × 1016 µBq |
| 5 Ci | 1.85 × 1017 µBq |
| 10 Ci | 3.7 × 1017 µBq |
| 25 Ci | 9.25 × 1017 µBq |
| 50 Ci | 1.85 × 1018 µBq |
| 100 Ci | 3.7 × 1018 µBq |