Convert DPM to Rutherfords (dpm to Rd)
1 disintegration per minute (dpm) = 1.666666667 × 10⁻⁸ rutherfords (Rd). 1 Rd = 60000000 dpm. Example: 15 dpm = 15 × 1.666666667 × 10⁻⁸ = 2.5 × 10⁻⁷ Rd.
Also searched as disintegrations per minute to Rd, disintegrations per minute in Rd, disintegrations per minute into rutherfords, dpm to Rd, dpm in rutherfords, dpm into rutherford, disintegration per minute to rutherford, dpm to rutherfords converter and how many rutherfords in a disintegration per minute.
1 dpm = 1.666666667e-8 Rd
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk disintegration per minute to rutherford converter to paste a column from Excel.
How to Convert DPM to Rutherford
- 1 dpm = 1.666666667 × 10⁻⁸ Rd
- 1 Rd = 60000000 dpm
- Example: convert 15 dpm to Rd: 15 dpm = 15 × 1.666666667 × 10⁻⁸ Rd = 2.5 × 10⁻⁷ Rd
Formula
Rd = dpm × 1.666666666667 × 10⁻⁸
or Rd = dpm ÷ 60000000
Derivation from SI units:
- 1 dpm = 1/60 Bq.
- 1 Rd = 10⁶ Bq (obsolete).
- 1 dpm = 0.01666666666667 Bq ÷ 1000000 Bq per Rd = 1.666666666667 × 10⁻⁸ Rd
Both units are defined exactly, so the factor is exact. DPM definition: disintegration per minute; Rutherford definition: rutherford.
Worked examples
- A reading of 600 dpm converts to 0.00001 Rd.
600 dpm × 1.666666667 × 10⁻⁸ = 0.00001 Rd - A value of 6000 dpm is 0.0001 Rd.
6000 dpm × 1.666666667 × 10⁻⁸ = 0.0001 Rd
DPM to Rutherford conversion table
| DPM | Rutherfords (Rd) |
|---|---|
| 60 dpm | 0.000001 Rd |
| 100 dpm | 0.000001666666667 Rd |
| 220 dpm | 0.000003666666667 Rd |
| 600 dpm | 0.00001 Rd |
| 1000 dpm | 0.00001666666667 Rd |
| 2220 dpm | 0.000037 Rd |
| 6000 dpm | 0.0001 Rd |
| 10000 dpm | 0.0001666666667 Rd |
| 60000 dpm | 0.001 Rd |
| 100000 dpm | 0.001666666667 Rd |
Where it's used
DPM are used for wipe tests and contamination surveys, while rutherfords appear in older nuclear physics literature. 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 rutherford | 1.666666667 × 10⁻⁸ Rd |
| 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 microcurie | 4.504504505 × 10⁻⁷ µCi |
|---|---|
| disintegration per minute to terabecquerel | 1.666666667 × 10⁻¹⁴ TBq |
| disintegration per minute to nanocurie | 0.0004504504505 nCi |
Frequently asked questions
How many rutherfords are in 1 disintegration per minute?
1 dpm = 1.666666667 × 10⁻⁸ Rd.
How do I convert disintegrations per minute to rutherfords?
Multiply the value in dpm by 1.666666667 × 10⁻⁸, or divide it by 60000000. For example, 15 dpm × 1.666666667 × 10⁻⁸ = 2.5 × 10⁻⁷ Rd.
Is the dpm to Rd 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 Rutherfords (dpm to Rd). Retrieved October 25, 2026, from https://scientificconverters.com/radioactivity/dpm-to-rutherfords/
IEEE
Scientific Converters, "Convert DPM to Rutherfords (dpm to Rd)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/radioactivity/dpm-to-rutherfords/