Convert Millicuries to DPM (mCi to dpm)
1 millicurie (mCi) = 2220000000 disintegrations per minute (dpm). 1 dpm = 4.504504505 × 10⁻¹⁰ mCi. Example: 15 mCi = 15 × 2220000000 = 33300000000 dpm.
Also searched as millicuries to dpm, millicuries in dpm, millicuries into disintegrations per minute, mCi to dpm, mCi in disintegrations per minute, mCi into disintegration per minute, millicurie to disintegration per minute, mCi to disintegrations per minute converter and how many disintegrations per minute in a millicurie.
1 mCi = 2220000000 dpm
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk millicurie to disintegration per minute converter to paste a column from Excel.
How to Convert Millicurie to DPM
- 1 mCi = 2220000000 dpm
- 1 dpm = 4.504504505 × 10⁻¹⁰ mCi
- Example: convert 15 mCi to dpm: 15 mCi = 15 × 2220000000 dpm = 33300000000 dpm
Formula
dpm = mCi × 2220000000
Derivation from SI units:
- 1 mCi = 3.7 × 10⁷ Bq = 37 MBq.
- 1 dpm = 1/60 Bq.
- 1 mCi = 37000000 Bq ÷ 0.01666666666667 Bq per dpm = 2220000000 dpm
Both units are defined exactly, so the factor is exact. Millicurie definition: millicurie; DPM definition: disintegration per minute.
Worked examples
- A reading of 15 mCi converts to 33300000000 dpm.
15 mCi × 2220000000 = 33300000000 dpm - A value of 30 mCi is 66600000000 dpm.
30 mCi × 2220000000 = 66600000000 dpm
Millicurie to DPM conversion table
| Millicuries (mCi) | DPM |
|---|---|
| 1 mCi | 2220000000 dpm |
| 5 mCi | 11100000000 dpm |
| 10 mCi | 22200000000 dpm |
| 15 mCi | 33300000000 dpm |
| 20 mCi | 44400000000 dpm |
| 25 mCi | 55500000000 dpm |
| 30 mCi | 66600000000 dpm |
| 50 mCi | 111000000000 dpm |
| 100 mCi | 222000000000 dpm |
| 200 mCi | 444000000000 dpm |
Where it's used
Millicuries are used for US radiopharmaceutical doses (e.g. 10 mCi FDG), while disintegrations per minute appear in wipe tests and contamination surveys. 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 disintegration per minute | 2220000000 dpm |
| 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 |
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 disintegrations per minute are in 1 millicurie?
1 mCi = 2220000000 dpm.
How do I convert millicuries to disintegrations per minute?
Multiply the value in mCi by 2220000000. For example, 15 mCi × 2220000000 = 33300000000 dpm.
Is the mCi to dpm conversion exact?
Yes. Both units are defined exactly, and 1 mCi is exactly 2220000000 dpm.
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".
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 DPM (mCi to dpm). Retrieved October 25, 2026, from https://scientificconverters.com/radioactivity/millicuries-to-dpm/
IEEE
Scientific Converters, "Convert Millicuries to DPM (mCi to dpm)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/radioactivity/millicuries-to-dpm/