Convert Curies to Terabecquerels
Convert Curies (Ci) to Terabecquerels (TBq) instantly and accurately.
Conversion Formula
TBq = Ci × 0.037
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 Terabecquerels
The terabecquerel (TBq) equals 10¹² Bq. Medical cyclotron ¹⁸F production batches yield 0.1-1 TBq; ⁹⁹Mo/⁹⁹mTc generator lots for hospital nuclear medicine departments are shipped as multi-TBq consignments; ¹⁹²Ir industrial radiography sources are rated up to 5 TBq. 1 TBq = 10¹² Bq.
Quick Reference Table
| Curies (Ci) | Terabecquerels (TBq) |
|---|---|
| 1 Ci | 0.037 TBq |
| 2 Ci | 0.074 TBq |
| 5 Ci | 0.185 TBq |
| 10 Ci | 0.37 TBq |
| 25 Ci | 0.925 TBq |
| 50 Ci | 1.85 TBq |
| 100 Ci | 3.7 TBq |