Convert DPM to Microcuries (dpm to µCi)
1 disintegration per minute (dpm) = 4.504504505 × 10⁻⁷ microcuries (µCi). 1 µCi = 2220000 dpm. Example: 15 dpm = 15 × 4.504504505 × 10⁻⁷ = 0.000006756756757 µCi.
Also searched as disintegrations per minute to µCi, disintegrations per minute in µCi, disintegrations per minute into microcuries, dpm to µCi, dpm in microcuries, dpm into microcurie, disintegration per minute to microcurie, dpm to microcuries converter and how many microcuries in a disintegration per minute.
1 dpm = 4.504504505e-7 µCi
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk disintegration per minute to microcurie converter to paste a column from Excel.
How to Convert DPM to Microcurie
- 1 dpm = 4.504504505 × 10⁻⁷ µCi
- 1 µCi = 2220000 dpm
- Example: convert 15 dpm to µCi: 15 dpm = 15 × 4.504504505 × 10⁻⁷ µCi = 0.000006756756757 µCi
Formula
µCi = dpm ÷ 2220000
Derivation from SI units:
- 1 dpm = 1/60 Bq.
- 1 µCi = 3.7 × 10⁴ Bq = 37 kBq.
- 1 dpm = 0.01666666666667 Bq ÷ 37000 Bq per µCi = 4.504504504505 × 10⁻⁷ µCi
Both units are defined exactly, so the factor is exact. DPM definition: disintegration per minute; Microcurie definition: microcurie.
Worked examples
- A reading of 600 dpm converts to 0.0002702702703 µCi.
600 dpm × 4.504504505 × 10⁻⁷ = 0.0002702702703 µCi - A value of 6000 dpm is 0.002702702703 µCi.
6000 dpm × 4.504504505 × 10⁻⁷ = 0.002702702703 µCi
DPM to Microcurie conversion table
| DPM | Microcuries (µCi) |
|---|---|
| 60 dpm | 0.00002702702703 µCi |
| 100 dpm | 0.00004504504505 µCi |
| 220 dpm | 0.0000990990991 µCi |
| 600 dpm | 0.0002702702703 µCi |
| 1000 dpm | 0.0004504504505 µCi |
| 2220 dpm | 0.001 µCi |
| 6000 dpm | 0.002702702703 µCi |
| 10000 dpm | 0.004504504505 µCi |
| 60000 dpm | 0.02702702703 µCi |
| 100000 dpm | 0.04504504505 µCi |
Where it's used
DPM are used for wipe tests and contamination surveys, while microcuries appear in check and calibration sources. 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 microcurie | 4.504504505 × 10⁻⁷ µCi |
| disintegration per minute to becquerel | 0.01666666667 Bq |
| disintegration per minute to curie | 4.504504505 × 10⁻¹³ Ci |
| 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 |
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 microcuries are in 1 disintegration per minute?
1 dpm = 4.504504505 × 10⁻⁷ µCi.
How do I convert disintegrations per minute to microcuries?
Multiply the value in dpm by 4.504504505 × 10⁻⁷, or divide it by 2220000. For example, 15 dpm × 4.504504505 × 10⁻⁷ = 0.000006756756757 µCi.
Is the dpm to µCi 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 Microcuries (dpm to µCi). Retrieved October 25, 2026, from https://scientificconverters.com/radioactivity/dpm-to-microcuries/
IEEE
Scientific Converters, "Convert DPM to Microcuries (dpm to µCi)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/radioactivity/dpm-to-microcuries/