Radiation - Exposure conversion
1 roentgen (R) equals 258 microcoulomb/kilogram (µC/kg). Enter any value below to convert from R to µC/kg.
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1 R = 258 µC/kg
| Unit | Value |
|---|---|
| Coulomb/kilogram C/kg | 0.000258 |
| Millicoulomb/kilogram mC/kg | 0.258 |
| Microcoulomb/kilogram µC/kg | 258 |
| Roentgen R | 1 |
| Milliroentgen mR | 1,000 |
| Microroentgen µR | 1,000,000 |
| Parker parker | 1 |
| Rep rep | 1 |
| Sievert Sv | 0.000258 |
| Millisievert mSv | 0.258 |
| Microsievert µSv | 258 |
| Rem rem | 0.0258 |
| Millirem mrem | 25.8 |
Formula
Use this relationship for a direct conversion:
2 R = 516 µC/kg.
SI relationships follow the cited reference. Conventional and domain-specific factors use the established ConvertWin factor inventory; verify safety-critical work against the governing standard.
Quick reference
| Roentgen (R) | Microcoulomb/kilogram (µC/kg) |
|---|---|
| 0.01 | 2.58 |
| 0.1 | 25.8 |
| 1 | 258 |
| 2 | 516 |
| 5 | 1,290 |
| 10 | 2,580 |
| 25 | 6,450 |
| 50 | 12,900 |
| 100 | 25,800 |
| 1,000 | 258,000 |
From unit
Roentgen (R) is a unit of Radiation - Exposure. 1 R = 0.000258 C/kg
Symbol: R
To unit
Microcoulomb/kilogram (µC/kg) is a metric prefix submultiple of the Coulomb/kilogram (C/kg). 1 C/kg = 1,000,000 µC/kg.
Symbol: µC/kg
Keep converting
Source
The SI framework is checked against NIST Guide for the Use of the International System of Units; conventional factors come from the extended factor inventory. Calculations use full internal precision before display rounding.
View the complete radiation - exposure converterQuestions
Use the formula µC/kg = R x 258. 1 roentgen (R) equals 258 microcoulomb/kilogram (µC/kg).
SI relationships follow the cited reference. Conventional and domain-specific factors use the established ConvertWin factor inventory; verify safety-critical work against the governing standard.
