Convert Roentgens to Coulombs per Kilogram
1 roentgen = 0.000258 coulombs per kilogram. Multiply the number of roentgens by 0.000258.
1 R = 0.000258 C/kg
Multiply the number of roentgens by 0.000258.
For information only. Confirm dose and exposure values with a qualified radiation safety professional. About accuracy
Popular radiation exposure conversions
Roentgens to Coulombs per Kilogram table
| Roentgens | Coulombs per Kilogram |
|---|---|
| 1 R | 0.000258 C/kg |
| 2 R | 0.000516 C/kg |
| 3 R | 0.000774 C/kg |
| 4 R | 0.001032 C/kg |
| 5 R | 0.00129 C/kg |
| 10 R | 0.00258 C/kg |
| 20 R | 0.00516 C/kg |
| 25 R | 0.00645 C/kg |
| 50 R | 0.0129 C/kg |
| 100 R | 0.0258 C/kg |
| 500 R | 0.129 C/kg |
| 1000 R | 0.258 C/kg |
About these units
The roentgen (R) is a specialist or regional unit of radiation exposure, equal to 0.000258 coulombs per kilogram.
The coulomb per kilogram (C/kg) is an SI base or derived unit of radiation exposure.
Going the other way, 1 coulomb per kilogram = 3,875.969 roentgens. Exposure measures the ionisation that X-rays or gamma rays produce in air. Survey meters and older equipment read in roentgen, R, while the SI unit is the coulomb per kilogram. Exactly 1 R is 2.58 × 10⁻⁴ C/kg. Exposure is not the same as absorbed or effective dose.
Frequently asked
- How many coulombs per kilogram are in a roentgen?
- 1 roentgen = 0.000258 coulombs per kilogram.
- How do you convert roentgens to coulombs per kilogram?
- Multiply the number of roentgens by 0.000258.
- What is 10 R in C/kg?
- 10 R = 0.00258 C/kg.