Convert Microcuries to Kilobecquerels (µCi to kBq)
1 microcurie (µCi) = 37 kilobecquerels (kBq). 1 kBq = 0.02702702703 µCi. Example: 1 µCi = 1 × 37 = 37 kBq.
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1 µCi = 37 kBq
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk microcurie to kilobecquerel converter to paste a column from Excel.
How to Convert Microcurie to Kilobecquerel
- 1 µCi = 37 kBq
- 1 kBq = 0.02702702703 µCi
- Example: convert 1 µCi to kBq: 1 µCi = 1 × 37 kBq = 37 kBq
Formula
kBq = µCi × 37
Derivation from SI units:
- 1 µCi = 3.7 × 10⁴ Bq = 37 kBq.
- 1 kBq = 10³ Bq.
- 1 µCi = 37000 Bq ÷ 1000 Bq per kBq = 37 kBq
Both units are defined exactly, so the factor is exact. Microcurie definition: microcurie; Kilobecquerel definition: kilobecquerel.
Worked examples
- A 1 µCi check source is 37 kBq.
1 µCi × 37 = 37 kBq - 10 µCi is 370 kBq.
10 µCi × 37 = 370 kBq
Microcurie to Kilobecquerel conversion table
| Microcuries (µCi) | Kilobecquerels (kBq) |
|---|---|
| 0.1 µCi | 3.7 kBq |
| 0.5 µCi | 18.5 kBq |
| 1 µCi | 37 kBq |
| 2 µCi | 74 kBq |
| 5 µCi | 185 kBq |
| 10 µCi | 370 kBq |
| 20 µCi | 740 kBq |
| 50 µCi | 1850 kBq |
| 100 µCi | 3700 kBq |
| 1000 µCi | 37000 kBq |
Where it's used
Small source activities in microcuries, such as smoke detectors and check sources, are converted to kilobecquerels. Multiply by 37.
Microcurie to other radioactivity units
| Conversion | 1 µCi equals |
|---|---|
| microcurie to kilobecquerel | 37 kBq |
| microcurie to becquerel | 37000 Bq |
| microcurie to curie | 0.000001 Ci |
| microcurie to megabecquerel | 0.037 MBq |
| microcurie to millicurie | 0.001 mCi |
| microcurie to picocurie | 1000000 pCi |
| microcurie to gigabecquerel | 0.000037 GBq |
| microcurie to disintegration per minute | 2220000 dpm |
Show 3 more units
| microcurie to terabecquerel | 3.7 × 10⁻⁸ TBq |
|---|---|
| microcurie to nanocurie | 1000 nCi |
| microcurie to rutherford | 0.037 Rd |
Frequently asked questions
How much radioactivity is in a smoke detector?
About 1 µCi of americium-241, which is 37 kBq.
How many kilobecquerels are in 1 microcurie?
1 µCi = 37 kBq.
How do I convert microcuries to kilobecquerels?
Multiply the value in µCi by 37. For example, 1 µCi × 37 = 37 kBq.
Is the µCi to kBq conversion exact?
Yes. Both units are defined exactly, and 1 µCi is exactly 37 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 Microcuries to Kilobecquerels (µCi to kBq). Retrieved October 25, 2026, from https://scientificconverters.com/radioactivity/microcuries-to-kilobecquerels/
IEEE
Scientific Converters, "Convert Microcuries to Kilobecquerels (µCi to kBq)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/radioactivity/microcuries-to-kilobecquerels/