Radioactivity
µCitokBq
Convert microcuries (µCi) to kilobecquerels (kBq).
Factor1 µCi = 37 kBq
Converter
µCi
Accepts numbers or expressions, e.g. 150 + 14.7
Result
kBq
Rendered to 6 significant figures.
Formula
Formula
kBq = µCi × 37
Multiply any value in microcuries by 37 to obtain the value in kilobecquerels.
Worked example
Convert 100 µCi to kBq.
- 01Start with 100 µCi.
- 02Multiply by the conversion factor: 100 × 37 = 3700 kBq.
Result100 µCi = 3700 kBq
Conversion table
| µCi | kBq |
|---|---|
| 1 | 37 |
| 2 | 74 |
| 5 | 185 |
| 10 | 370 |
| 20 | 740 |
| 50 | 1850 |
| 100 | 3700 |
| 200 | 7400 |
| 500 | 18500 |
| 1000 | 37000 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from µCi to kBq?
1 µCi equals 37 kBq. To convert, multiply the value in microcuries by 37.
How do I convert 1 µCi to kBq?
1 µCi = 37 kBq. For any value, multiply by 37.
How do I convert kBq back to µCi?
Divide by the same factor — or equivalently, multiply by 0.02702703. So 1 kBq = 0.027027 µCi.
When would I need to convert microcurie to kilobecquerel?
Radioactivity (activity) conversions between µCi and kBq 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).