Radiation Exposure Converter
Convert radiation exposure units between SI and traditional units.
How to Use the Radiation Exposure Converter
Enter a radiation exposure value, select the source unit and choose the target unit to convert between coulomb per kilogram and roentgen.
Practical Example
1 roentgen equals approximately 2.58 × 10⁻⁴ C/kg.
Factors That Affect Radiation Exposure
Exposure measurements depend on radiation field, detector calibration, air conditions and geometry. This converter changes units only.
Frequently Asked Questions
What does C/kg measure?
It is the SI unit used to express ionization produced in air by X-rays or gamma rays.
What is a roentgen?
It is a legacy unit of radiation exposure.
Is exposure the same as absorbed dose?
No. Exposure describes ionization in air, while absorbed dose describes energy deposited in matter.
Understanding Radiation Exposure Units
Radiation exposure describes ionization produced by X-rays or gamma rays in air and may be expressed in coulombs per kilogram or roentgen. These units belong to an older exposure quantity and are not interchangeable with absorbed or equivalent dose without additional physical information.
The converter changes units only. It does not estimate biological risk or patient dose, so use the appropriate dosimetry quantity and professional guidance for safety-critical applications.
Technical Context and Conversion Notes
Radiation exposure in C/kg describes ionization produced in air by X or gamma radiation. Roentgen is an older exposure unit and cannot be universally converted to absorbed biological dose without additional assumptions.