Convert Microcuries to DPM (µCi to dpm)
1 microcurie (µCi) = 2220000 disintegrations per minute (dpm). 1 dpm = 4.504504505 × 10⁻⁷ µCi. Example: 15 µCi = 15 × 2220000 = 33300000 dpm.
Also searched as microcuries to dpm, microcuries in dpm, microcuries into disintegrations per minute, µCi to dpm, µCi in disintegrations per minute, µCi into disintegration per minute, microcurie to disintegration per minute, µCi to disintegrations per minute converter and how many disintegrations per minute in a microcurie.
1 µCi = 2220000 dpm
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk microcurie to disintegration per minute converter to paste a column from Excel.
How to Convert Microcurie to DPM
- 1 µCi = 2220000 dpm
- 1 dpm = 4.504504505 × 10⁻⁷ µCi
- Example: convert 15 µCi to dpm: 15 µCi = 15 × 2220000 dpm = 33300000 dpm
Formula
dpm = µCi × 2220000
Derivation from SI units:
- 1 µCi = 3.7 × 10⁴ Bq = 37 kBq.
- 1 dpm = 1/60 Bq.
- 1 µCi = 37000 Bq ÷ 0.01666666666667 Bq per dpm = 2220000 dpm
Both units are defined exactly, so the factor is exact. Microcurie definition: microcurie; DPM definition: disintegration per minute.
Worked examples
- A reading of 2 µCi converts to 4440000 dpm.
2 µCi × 2220000 = 4440000 dpm - A value of 20 µCi is 44400000 dpm.
20 µCi × 2220000 = 44400000 dpm
Microcurie to DPM conversion table
| Microcuries (µCi) | DPM |
|---|---|
| 0.1 µCi | 222000 dpm |
| 0.5 µCi | 1110000 dpm |
| 1 µCi | 2220000 dpm |
| 2 µCi | 4440000 dpm |
| 5 µCi | 11100000 dpm |
| 10 µCi | 22200000 dpm |
| 20 µCi | 44400000 dpm |
| 50 µCi | 111000000 dpm |
| 100 µCi | 222000000 dpm |
| 1000 µCi | 2220000000 dpm |
Where it's used
Microcuries are used for check and calibration sources, 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.
Microcurie to other radioactivity units
| Conversion | 1 µCi equals |
|---|---|
| microcurie to disintegration per minute | 2220000 dpm |
| microcurie to becquerel | 37000 Bq |
| microcurie to curie | 0.000001 Ci |
| microcurie to megabecquerel | 0.037 MBq |
| microcurie to millicurie | 0.001 mCi |
| microcurie to picocurie | 1000000 pCi |
| microcurie to kilobecquerel | 37 kBq |
| microcurie to gigabecquerel | 0.000037 GBq |
Show 3 more units
| microcurie to terabecquerel | 3.7 × 10⁻⁸ TBq |
|---|---|
| microcurie to nanocurie | 1000 nCi |
| microcurie to rutherford | 0.037 Rd |
Frequently asked questions
How many disintegrations per minute are in 1 microcurie?
1 µCi = 2220000 dpm.
How do I convert microcuries to disintegrations per minute?
Multiply the value in µCi by 2220000. For example, 15 µCi × 2220000 = 33300000 dpm.
Is the µCi to dpm conversion exact?
Yes. Both units are defined exactly, and 1 µCi is exactly 2220000 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 Microcuries to DPM (µCi to dpm). Retrieved October 25, 2026, from https://scientificconverters.com/radioactivity/microcuries-to-dpm/
IEEE
Scientific Converters, "Convert Microcuries to DPM (µCi to dpm)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/radioactivity/microcuries-to-dpm/