Convert Terabecquerels to Curies (TBq to Ci)
1 terabecquerel (TBq) = 27.02702703 curies (Ci). 1 Ci = 0.037 TBq. Example: 15 TBq = 15 × 27.02702703 = 405.4054054 Ci.
Also searched as terabecquerels to Ci, terabecquerels in Ci, terabecquerels into curies, TBq to Ci, TBq in curies, TBq into curie, terabecquerel to curie, TBq to curies converter and how many curies in a terabecquerel.
1 TBq = 27.02702703 Ci
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk terabecquerel to curie converter to paste a column from Excel.
How to Convert Terabecquerel to Curie
- 1 TBq = 27.02702703 Ci
- 1 Ci = 0.037 TBq
- Example: convert 15 TBq to Ci: 15 TBq = 15 × 27.02702703 Ci = 405.4054054 Ci
Formula
Ci = TBq × 27.02702702703
Derivation from SI units:
- 1 TBq = 10¹² Bq.
- 1 Ci = 3.7 × 10¹⁰ Bq exactly (originally the activity of 1 g of radium-226).
- 1 TBq = 1000000000000 Bq ÷ 37000000000 Bq per Ci = 27.02702702703 Ci
Both units are defined exactly, so the factor is exact. Terabecquerel definition: terabecquerel; Curie definition: curie.
Worked examples
- A reading of 2 TBq converts to 54.05405405 Ci.
2 TBq × 27.02702703 = 54.05405405 Ci - A value of 20 TBq is 540.5405405 Ci.
20 TBq × 27.02702703 = 540.5405405 Ci
Terabecquerel to Curie conversion table
| Terabecquerels (TBq) | Curies (Ci) |
|---|---|
| 0.1 TBq | 2.702702703 Ci |
| 0.5 TBq | 13.51351351 Ci |
| 1 TBq | 27.02702703 Ci |
| 2 TBq | 54.05405405 Ci |
| 5 TBq | 135.1351351 Ci |
| 10 TBq | 270.2702703 Ci |
| 20 TBq | 540.5405405 Ci |
| 50 TBq | 1351.351351 Ci |
| 100 TBq | 2702.702703 Ci |
| 1000 TBq | 27027.02703 Ci |
Where it's used
Terabecquerels are used for cobalt-60 and iridium-192 sources, while curies appear in US nuclear regulation and licences. Both measure activity of a radioactive source, so the conversion is a fixed factor.
Terabecquerel to other radioactivity units
| Conversion | 1 TBq equals |
|---|---|
| terabecquerel to curie | 27.02702703 Ci |
| terabecquerel to becquerel | 1000000000000 Bq |
| terabecquerel to megabecquerel | 1000000 MBq |
| terabecquerel to millicurie | 27027.02703 mCi |
| terabecquerel to picocurie | 27027027030000 pCi |
| terabecquerel to kilobecquerel | 1000000000 kBq |
| terabecquerel to gigabecquerel | 1000 GBq |
| terabecquerel to microcurie | 27027027.03 µCi |
Show 3 more units
| terabecquerel to disintegration per minute | 60000000000000 dpm |
|---|---|
| terabecquerel to nanocurie | 27027027030 nCi |
| terabecquerel to rutherford | 1000000 Rd |
Frequently asked questions
How many curies are in 1 terabecquerel?
1 TBq = 27.02702703 Ci.
How do I convert terabecquerels to curies?
Multiply the value in TBq by 27.02702703. For example, 15 TBq × 27.02702703 = 405.4054054 Ci.
Is the TBq to Ci conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4 (becquerel, gray, sievert, lux) and Table 2 (candela).
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "curie".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Terabecquerels to Curies (TBq to Ci). Retrieved October 25, 2026, from https://scientificconverters.com/radioactivity/terabecquerels-to-curies/
IEEE
Scientific Converters, "Convert Terabecquerels to Curies (TBq to Ci)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/radioactivity/terabecquerels-to-curies/