Convert Curies to Kilobecquerels (Ci to kBq)
1 curie (Ci) = 37000000 kilobecquerels (kBq). 1 kBq = 2.702702703 × 10⁻⁸ Ci. Example: 15 Ci = 15 × 37000000 = 555000000 kBq.
Also searched as curies to kBq, curies in kBq, curies into kilobecquerels, Ci to kBq, Ci in kilobecquerels, Ci into kilobecquerel, curie to kilobecquerel, Ci to kilobecquerels converter and how many kilobecquerels in a curie.
1 Ci = 37000000 kBq
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk curie to kilobecquerel converter to paste a column from Excel.
How to Convert Curie to Kilobecquerel
- 1 Ci = 37000000 kBq
- 1 kBq = 2.702702703 × 10⁻⁸ Ci
- Example: convert 15 Ci to kBq: 15 Ci = 15 × 37000000 kBq = 555000000 kBq
Formula
kBq = Ci × 37000000
Derivation from SI units:
- 1 Ci = 3.7 × 10¹⁰ Bq exactly (originally the activity of 1 g of radium-226).
- 1 kBq = 10³ Bq.
- 1 Ci = 37000000000 Bq ÷ 1000 Bq per kBq = 37000000 kBq
Both units are defined exactly, so the factor is exact. Curie definition: curie; Kilobecquerel definition: kilobecquerel.
Worked examples
- A reading of 2 Ci converts to 74000000 kBq.
2 Ci × 37000000 = 74000000 kBq - A value of 20 Ci is 740000000 kBq.
20 Ci × 37000000 = 740000000 kBq
Curie to Kilobecquerel conversion table
| Curies (Ci) | Kilobecquerels (kBq) |
|---|---|
| 0.1 Ci | 3700000 kBq |
| 0.5 Ci | 18500000 kBq |
| 1 Ci | 37000000 kBq |
| 2 Ci | 74000000 kBq |
| 5 Ci | 185000000 kBq |
| 10 Ci | 370000000 kBq |
| 20 Ci | 740000000 kBq |
| 50 Ci | 1850000000 kBq |
| 100 Ci | 3700000000 kBq |
| 1000 Ci | 37000000000 kBq |
Where it's used
Curies are used for US nuclear regulation and licences, while kilobecquerels appear in laboratory sources and calibration standards. 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 kilobecquerel | 37000000 kBq |
| curie to becquerel | 37000000000 Bq |
| curie to megabecquerel | 37000 MBq |
| curie to millicurie | 1000 mCi |
| curie to picocurie | 1000000000000 pCi |
| curie to gigabecquerel | 37 GBq |
| curie to microcurie | 1000000 µCi |
| curie to disintegration per minute | 2220000000000 dpm |
Show 3 more units
| curie to terabecquerel | 0.037 TBq |
|---|---|
| curie to nanocurie | 1000000000 nCi |
| curie to rutherford | 37000 Rd |
Frequently asked questions
How many kilobecquerels are in 1 curie?
1 Ci = 37000000 kBq.
How do I convert curies to kilobecquerels?
Multiply the value in Ci by 37000000. For example, 15 Ci × 37000000 = 555000000 kBq.
Is the Ci to kBq conversion exact?
Yes. Both units are defined exactly, and 1 Ci is exactly 37000000 kBq.
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 Kilobecquerels (Ci to kBq). Retrieved October 25, 2026, from https://scientificconverters.com/radioactivity/curies-to-kilobecquerels/
IEEE
Scientific Converters, "Convert Curies to Kilobecquerels (Ci to kBq)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/radioactivity/curies-to-kilobecquerels/