Converter group
Radiology Converters
Radiation - Exposure Converter
Result
... Parker = ... Roentgen
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Parker to Roentgen Converter
Use this page to convert parker values into roentgen, with background details, formulas, a worked example, and a quick conversion table.
Conversion formula
1 parker = 1 R
1 R = 1 parker
Example: 0.001 parker = 0.001 R
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Parker
Equivalent to the roentgen in most contexts.
History: Named after Herbert Parker, a pioneer in health physics.
Current use: Obsolete, used only in historical radiation safety texts.
Also written as parker.
Roentgen
Defined as the amount of radiation that produces one esu of charge in one cubic centimeter of dry air at STP.
History: Named after Wilhelm Röntgen, the discoverer of X-rays. Established in 1928.
Current use: Largely replaced by C/kg, but still found in older equipment and historical data.
Also written as R.
Parker to Roentgen table
| Parker [parker] | Roentgen [R] |
|---|---|
| 0.01 parker | 0.01 R |
| 0.1 parker | 0.1 R |
| 1 parker | 1 R |
| 2 parker | 2 R |
| 5 parker | 5 R |
| 10 parker | 10 R |
| 20 parker | 20 R |
| 50 parker | 50 R |
| 100 parker | 100 R |
Frequently asked questions
How many Roentgen (R) are in one Parker (parker)?
One Parker equals 1 Roentgen.
How do you convert Parker to Roentgen?
Multiply the Parker value by 1 to get the result in Roentgen.
How do you convert Roentgen back to Parker?
Multiply the Roentgen value by 1 to get back to Parker.
What is 0.001 Parker in Roentgen?
0.001 Parker equals 0.001 Roentgen.