Radioactivity
mCitoMBq
Convert millicuries (mCi) to megabecquerels (MBq).
Factor1 mCi = 37 MBq
Converter
mCi
Accepts numbers or expressions, e.g. 150 + 14.7
Result
MBq
Rendered to 6 significant figures.
Formula
Formula
MBq = mCi × 37
Multiply any value in millicuries by 37 to obtain the value in megabecquerels.
Worked example
Convert 1 mCi to MBq.
- 01Start with 1 mCi.
- 02Multiply by the conversion factor: 1 × 37 = 37 MBq.
Result1 mCi = 37 MBq
Conversion table
| mCi | MBq |
|---|---|
| 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 mCi to MBq?
1 mCi equals 37 MBq. To convert, multiply the value in millicuries by 37.
How do I convert 1 mCi to MBq?
1 mCi = 37 MBq. For any value, multiply by 37.
How do I convert MBq back to mCi?
Divide by the same factor — or equivalently, multiply by 0.02702703. So 1 MBq = 0.027027 mCi.
When would I need to convert millicurie to megabecquerel?
Radioactivity (activity) conversions between mCi and MBq 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).