Convert Millicuries to Becquerels (mCi to Bq)
1 millicurie (mCi) = 37000000 becquerels (Bq). 1 Bq = 2.702702703 × 10⁻⁸ mCi. Example: 15 mCi = 15 × 37000000 = 555000000 Bq.
Also searched as millicuries to Bq, millicuries in Bq, millicuries into becquerels, mCi to Bq, mCi in becquerels, mCi into becquerel, millicurie to becquerel, mCi to becquerels converter and how many becquerels in a millicurie.
1 mCi = 37000000 Bq
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk millicurie to becquerel converter to paste a column from Excel.
How to Convert Millicurie to Becquerel
- 1 mCi = 37000000 Bq
- 1 Bq = 2.702702703 × 10⁻⁸ mCi
- Example: convert 15 mCi to Bq: 15 mCi = 15 × 37000000 Bq = 555000000 Bq
Formula
Bq = mCi × 37000000
Derivation from SI units:
- 1 mCi = 3.7 × 10⁷ Bq = 37 MBq.
- 1 Bq = 1 decay per second (s⁻¹).
Both units are defined exactly, so the factor is exact. Millicurie definition: millicurie; Becquerel definition: becquerel.
Worked examples
- A reading of 15 mCi converts to 555000000 Bq.
15 mCi × 37000000 = 555000000 Bq - A value of 30 mCi is 1110000000 Bq.
30 mCi × 37000000 = 1110000000 Bq
Millicurie to Becquerel conversion table
| Millicuries (mCi) | Becquerels (Bq) |
|---|---|
| 1 mCi | 37000000 Bq |
| 5 mCi | 185000000 Bq |
| 10 mCi | 370000000 Bq |
| 15 mCi | 555000000 Bq |
| 20 mCi | 740000000 Bq |
| 25 mCi | 925000000 Bq |
| 30 mCi | 1110000000 Bq |
| 50 mCi | 1850000000 Bq |
| 100 mCi | 3700000000 Bq |
| 200 mCi | 7400000000 Bq |
Where it's used
Millicuries are used for US radiopharmaceutical doses (e.g. 10 mCi FDG), while becquerels appear in food and environmental radioactivity limits. Both measure activity of a radioactive source, so the conversion is a fixed factor.
Millicurie to other radioactivity units
| Conversion | 1 mCi equals |
|---|---|
| millicurie to becquerel | 37000000 Bq |
| millicurie to curie | 0.001 Ci |
| millicurie to megabecquerel | 37 MBq |
| millicurie to picocurie | 1000000000 pCi |
| millicurie to kilobecquerel | 37000 kBq |
| millicurie to gigabecquerel | 0.037 GBq |
| millicurie to microcurie | 1000 µCi |
| millicurie to disintegration per minute | 2220000000 dpm |
Show 3 more units
| millicurie to terabecquerel | 0.000037 TBq |
|---|---|
| millicurie to nanocurie | 1000000 nCi |
| millicurie to rutherford | 37 Rd |
Frequently asked questions
How many becquerels are in 1 millicurie?
1 mCi = 37000000 Bq.
How do I convert millicuries to becquerels?
Multiply the value in mCi by 37000000. For example, 15 mCi × 37000000 = 555000000 Bq.
Is the mCi to Bq conversion exact?
Yes. Both units are defined exactly, and 1 mCi is exactly 37000000 Bq.
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 Millicuries to Becquerels (mCi to Bq). Retrieved October 25, 2026, from https://scientificconverters.com/radioactivity/millicuries-to-becquerels/
IEEE
Scientific Converters, "Convert Millicuries to Becquerels (mCi to Bq)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/radioactivity/millicuries-to-becquerels/