Convert DPM to Curies (dpm to Ci)
1 disintegration per minute (dpm) = 4.504504505 × 10⁻¹³ curies (Ci). 1 Ci = 2220000000000 dpm. Example: 15 dpm = 15 × 4.504504505 × 10⁻¹³ = 6.756756757 × 10⁻¹² Ci.
Also searched as disintegrations per minute to Ci, disintegrations per minute in Ci, disintegrations per minute into curies, dpm to Ci, dpm in curies, dpm into curie, disintegration per minute to curie, dpm to curies converter and how many curies in a disintegration per minute.
1 dpm = 4.504504505e-13 Ci
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk disintegration per minute to curie converter to paste a column from Excel.
How to Convert DPM to Curie
- 1 dpm = 4.504504505 × 10⁻¹³ Ci
- 1 Ci = 2220000000000 dpm
- Example: convert 15 dpm to Ci: 15 dpm = 15 × 4.504504505 × 10⁻¹³ Ci = 6.756756757 × 10⁻¹² Ci
Formula
Ci = dpm ÷ 2220000000000
Derivation from SI units:
- 1 dpm = 1/60 Bq.
- 1 Ci = 3.7 × 10¹⁰ Bq exactly (originally the activity of 1 g of radium-226).
- 1 dpm = 0.01666666666667 Bq ÷ 37000000000 Bq per Ci = 4.504504504505 × 10⁻¹³ Ci
Both units are defined exactly, so the factor is exact. DPM definition: disintegration per minute; Curie definition: curie.
Worked examples
- A reading of 600 dpm converts to 2.702702703 × 10⁻¹⁰ Ci.
600 dpm × 4.504504505 × 10⁻¹³ = 2.702702703 × 10⁻¹⁰ Ci - A value of 6000 dpm is 2.702702703 × 10⁻⁹ Ci.
6000 dpm × 4.504504505 × 10⁻¹³ = 2.702702703 × 10⁻⁹ Ci
DPM to Curie conversion table
| DPM | Curies (Ci) |
|---|---|
| 60 dpm | 2.702702703 × 10⁻¹¹ Ci |
| 100 dpm | 4.504504505 × 10⁻¹¹ Ci |
| 220 dpm | 9.90990991 × 10⁻¹¹ Ci |
| 600 dpm | 2.702702703 × 10⁻¹⁰ Ci |
| 1000 dpm | 4.504504505 × 10⁻¹⁰ Ci |
| 2220 dpm | 1 × 10⁻⁹ Ci |
| 6000 dpm | 2.702702703 × 10⁻⁹ Ci |
| 10000 dpm | 4.504504505 × 10⁻⁹ Ci |
| 60000 dpm | 2.702702703 × 10⁻⁸ Ci |
| 100000 dpm | 4.504504505 × 10⁻⁸ Ci |
Where it's used
DPM are used for wipe tests and contamination surveys, while curies appear in US nuclear regulation and licences. Both measure activity of a radioactive source, so the conversion is a fixed factor.
DPM to other radioactivity units
| Conversion | 1 dpm equals |
|---|---|
| disintegration per minute to curie | 4.504504505 × 10⁻¹³ Ci |
| disintegration per minute to becquerel | 0.01666666667 Bq |
| disintegration per minute to megabecquerel | 1.666666667 × 10⁻⁸ MBq |
| disintegration per minute to millicurie | 4.504504505 × 10⁻¹⁰ mCi |
| disintegration per minute to picocurie | 0.4504504505 pCi |
| disintegration per minute to kilobecquerel | 0.00001666666667 kBq |
| disintegration per minute to gigabecquerel | 1.666666667 × 10⁻¹¹ GBq |
| disintegration per minute to microcurie | 4.504504505 × 10⁻⁷ µCi |
Show 3 more units
| disintegration per minute to terabecquerel | 1.666666667 × 10⁻¹⁴ TBq |
|---|---|
| disintegration per minute to nanocurie | 0.0004504504505 nCi |
| disintegration per minute to rutherford | 1.666666667 × 10⁻⁸ Rd |
Frequently asked questions
How many curies are in 1 disintegration per minute?
1 dpm = 4.504504505 × 10⁻¹³ Ci.
How do I convert disintegrations per minute to curies?
Multiply the value in dpm by 4.504504505 × 10⁻¹³, or divide it by 2220000000000. For example, 15 dpm × 4.504504505 × 10⁻¹³ = 6.756756757 × 10⁻¹² Ci.
Is the dpm to Ci conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
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 DPM to Curies (dpm to Ci). Retrieved October 25, 2026, from https://scientificconverters.com/radioactivity/dpm-to-curies/
IEEE
Scientific Converters, "Convert DPM to Curies (dpm to Ci)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/radioactivity/dpm-to-curies/