Convert Curies to Terabecquerels (Ci to TBq)
1 curie (Ci) = 0.037 terabecquerels (TBq). 1 TBq = 27.02702703 Ci. Example: 15 Ci = 15 × 0.037 = 0.555 TBq.
Also searched as curies to TBq, curies in TBq, curies into terabecquerels, Ci to TBq, Ci in terabecquerels, Ci into terabecquerel, curie to terabecquerel, Ci to terabecquerels converter and how many terabecquerels in a curie.
1 Ci = 0.037 TBq
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk curie to terabecquerel converter to paste a column from Excel.
How to Convert Curie to Terabecquerel
- 1 Ci = 0.037 TBq
- 1 TBq = 27.02702703 Ci
- Example: convert 15 Ci to TBq: 15 Ci = 15 × 0.037 TBq = 0.555 TBq
Formula
TBq = Ci × 0.037
or TBq = Ci ÷ 27.02702702703
Derivation from SI units:
- 1 Ci = 3.7 × 10¹⁰ Bq exactly (originally the activity of 1 g of radium-226).
- 1 TBq = 10¹² Bq.
- 1 Ci = 37000000000 Bq ÷ 1000000000000 Bq per TBq = 0.037 TBq
Both units are defined exactly, so the factor is exact. Curie definition: curie; Terabecquerel definition: terabecquerel.
Worked examples
- A reading of 2 Ci converts to 0.074 TBq.
2 Ci × 0.037 = 0.074 TBq - A value of 20 Ci is 0.74 TBq.
20 Ci × 0.037 = 0.74 TBq
Curie to Terabecquerel conversion table
| Curies (Ci) | Terabecquerels (TBq) |
|---|---|
| 0.1 Ci | 0.0037 TBq |
| 0.5 Ci | 0.0185 TBq |
| 1 Ci | 0.037 TBq |
| 2 Ci | 0.074 TBq |
| 5 Ci | 0.185 TBq |
| 10 Ci | 0.37 TBq |
| 20 Ci | 0.74 TBq |
| 50 Ci | 1.85 TBq |
| 100 Ci | 3.7 TBq |
| 1000 Ci | 37 TBq |
Where it's used
Curies are used for US nuclear regulation and licences, while terabecquerels appear in cobalt-60 and iridium-192 sources. Both measure activity of a radioactive source, so the conversion is a fixed factor.
Curie to other radioactivity units
| Conversion | 1 Ci equals |
|---|---|
| curie to terabecquerel | 0.037 TBq |
| curie to becquerel | 37000000000 Bq |
| curie to megabecquerel | 37000 MBq |
| curie to millicurie | 1000 mCi |
| curie to picocurie | 1000000000000 pCi |
| curie to kilobecquerel | 37000000 kBq |
| curie to gigabecquerel | 37 GBq |
| curie to microcurie | 1000000 µCi |
Show 3 more units
| curie to disintegration per minute | 2220000000000 dpm |
|---|---|
| curie to nanocurie | 1000000000 nCi |
| curie to rutherford | 37000 Rd |
Frequently asked questions
How many terabecquerels are in 1 curie?
1 Ci = 0.037 TBq.
How do I convert curies to terabecquerels?
Multiply the value in Ci by 0.037, or divide it by 27.02702703. For example, 15 Ci × 0.037 = 0.555 TBq.
Is the Ci to TBq conversion exact?
Yes. Both units are defined exactly, and 1 Ci is exactly 0.037 TBq.
Sources
- 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".
- 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).
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 Curies to Terabecquerels (Ci to TBq). Retrieved October 25, 2026, from https://scientificconverters.com/radioactivity/curies-to-terabecquerels/
IEEE
Scientific Converters, "Convert Curies to Terabecquerels (Ci to TBq)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/radioactivity/curies-to-terabecquerels/