Radioactivity
CitoTBq
Convert curies (Ci) to terabecquerels (TBq).
Factor1 Ci = 0.037 TBq
Converter
Ci
Accepts numbers or expressions, e.g. 150 + 14.7
Result
TBq
Rendered to 6 significant figures.
Formula
Formula
TBq = Ci × 0.037
Multiply any value in curies by 0.037 to obtain the value in terabecquerels.
Worked example
Convert 1000 Ci to TBq.
- 01Start with 1000 Ci.
- 02Multiply by the conversion factor: 1000 × 0.037 = 37 TBq.
Result1000 Ci = 37 TBq
Conversion table
| Ci | TBq |
|---|---|
| 1 | 0.037 |
| 2 | 0.074 |
| 5 | 0.185 |
| 10 | 0.37 |
| 20 | 0.74 |
| 50 | 1.85 |
| 100 | 3.7 |
| 200 | 7.4 |
| 500 | 18.5 |
| 1000 | 37 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from Ci to TBq?
1 Ci equals 0.037 TBq. To convert, multiply the value in curies by 0.037.
How do I convert 1 Ci to TBq?
1 Ci = 0.037 TBq. For any value, multiply by 0.037.
How do I convert TBq back to Ci?
Divide by the same factor — or equivalently, multiply by 27.02703. So 1 TBq = 27.027 Ci.
When would I need to convert curie to terabecquerel?
Radioactivity (activity) conversions between Ci and TBq are routine in health physics, nuclear medicine ordering, environmental monitoring, radiopharmacy and reactor/accelerator-source documentation. The becquerel (Bq) is the SI unit; the curie (Ci) is the legacy unit (1 Ci ≡ 3.7×10¹⁰ Bq exactly). This category is strictly activity (decays per second) — it does NOT cover absorbed dose (Gy, rad), dose equivalent (Sv, rem), exposure or dose rate, all of which are different physical quantities and live in separate categories.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).