Radioactivity
pCitodpm
Convert picocuries (pCi) to disintegrations per minute (dpm).
Factor1 pCi = 2.22 dpm
Converter
pCi
Accepts numbers or expressions, e.g. 150 + 14.7
Result
dpm
Rendered to 6 significant figures.
Formula
Formula
dpm = pCi × 2.22
Multiply any value in picocuries by 2.22 to obtain the value in disintegrations per minute.
Worked example
Convert 10 pCi to dpm.
- 01Start with 10 pCi.
- 02Multiply by the conversion factor: 10 × 2.22 = 22.2 dpm.
Result10 pCi = 22.2 dpm
Conversion table
| pCi | dpm |
|---|---|
| 1 | 2.22 |
| 2 | 4.44 |
| 5 | 11.1 |
| 10 | 22.2 |
| 20 | 44.4 |
| 50 | 111 |
| 100 | 222 |
| 200 | 444 |
| 500 | 1110 |
| 1000 | 2220 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from pCi to dpm?
1 pCi equals 2.22 dpm. To convert, multiply the value in picocuries by 2.22.
How do I convert 1 pCi to dpm?
1 pCi = 2.22 dpm. For any value, multiply by 2.22.
How do I convert dpm back to pCi?
Divide by the same factor — or equivalently, multiply by 0.4504505. So 1 dpm = 0.45045 pCi.
When would I need to convert picocurie to disintegration per minute?
Radioactivity (activity) conversions between pCi and dpm 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).