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Radiology Converters
Radiation - Exposure Converter
Result
... Roentgen = ... Millicoulomb per kilogram
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Roentgen to Millicoulomb per kilogram Converter
Use this page to convert roentgen values into millicoulomb per kilogram, with background details, formulas, a worked example, and a quick conversion table.
Conversion formula
1 R = 0.258 mC/kg
1 mC/kg = 3.87596899224806 R
Example: 0.001 R = 0.000258 mC/kg
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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.
Millicoulomb per kilogram
One millicoulomb per kilogram is equal to 0.001 C/kg.
History: Standard metric prefix applied to the SI unit.
Current use: Commonly used in clinical radiology and radiation safety reporting.
Also written as mC/kg.
Roentgen to Millicoulomb per kilogram table
| Roentgen [R] | Millicoulomb per kilogram [mC/kg] |
|---|---|
| 0.01 R | 0.00258 mC/kg |
| 0.1 R | 0.0258 mC/kg |
| 1 R | 0.258 mC/kg |
| 2 R | 0.516 mC/kg |
| 5 R | 1.29 mC/kg |
| 10 R | 2.58 mC/kg |
| 20 R | 5.16 mC/kg |
| 50 R | 12.9 mC/kg |
| 100 R | 25.8 mC/kg |
Frequently asked questions
How many Millicoulomb per kilogram (mC/kg) are in one Roentgen (R)?
One Roentgen equals 0.258 Millicoulomb per kilogram.
How do you convert Roentgen to Millicoulomb per kilogram?
Multiply the Roentgen value by 0.258 to get the result in Millicoulomb per kilogram.
How do you convert Millicoulomb per kilogram back to Roentgen?
Multiply the Millicoulomb per kilogram value by 3.87596899224806 to get back to Roentgen.
What is 0.001 Roentgen in Millicoulomb per kilogram?
0.001 Roentgen equals 0.000258 Millicoulomb per kilogram.