Radioactivity
µCitoBq
Convert microcuries (µCi) to becquerels (Bq).
Factor1 µCi = 37000 Bq
Converter
µCi
Accepts numbers or expressions, e.g. 150 + 14.7
Result
Bq
Rendered to 6 significant figures.
Formula
Formula
Bq = µCi × 37000
Multiply any value in microcuries by 37000 to obtain the value in becquerels.
Worked example
Convert 1 µCi to Bq.
- 01Start with 1 µCi.
- 02Multiply by the conversion factor: 1 × 37000 = 37000 Bq.
Result1 µCi = 37000 Bq
Conversion table
| µCi | Bq |
|---|---|
| 1 | 37000 |
| 2 | 74000 |
| 5 | 1.8500e+5 |
| 10 | 3.7000e+5 |
| 20 | 7.4000e+5 |
| 50 | 1.8500e+6 |
| 100 | 3.7000e+6 |
| 200 | 7.4000e+6 |
| 500 | 1.85e+7 |
| 1000 | 3.7e+7 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from µCi to Bq?
1 µCi equals 37000 Bq. To convert, multiply the value in microcuries by 37000.
How do I convert 1 µCi to Bq?
1 µCi = 37000 Bq. For any value, multiply by 37000.
How do I convert Bq back to µCi?
Divide by the same factor — or equivalently, multiply by 2.702703e-5. So 1 Bq = 2.7027e-5 µCi.
When would I need to convert microcurie to becquerel?
Radioactivity (activity) conversions between µCi and Bq 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).