Convert Megaroentgens to Coulombs per kilogram
Convert Megaroentgens (MR) to Coulombs per kilogram (C/kg) instantly and accurately.
Conversion Formula
C/kg = MR × 258
About Megaroentgens
The megaroentgen (MR) equals 258 C/kg. Used only in extreme radiation environments - nuclear detonation effects calculations, prompt gamma pulse environments, and legacy radiation hardness assurance for military electronics specify total ionising exposure in MR(air); calibrated flash X-ray simulators output pulse exposures in MR. 1 MR = 258 C/kg = 10⁶ R.
About Coulombs per kilogram
The coulomb per kilogram (C/kg) is the SI derived unit of radiation exposure, equal to 1 coulomb of ion charge liberated per kilogram of dry air. It replaced the roentgen in SI. Calibration of clinical X-ray beams with free-air ionisation chambers and parallel-plate chambers yields results in C/kg. 1 C/kg ≈ 3876 R.
Quick Reference Table
| Megaroentgens (MR) | Coulombs per kilogram (C/kg) |
|---|---|
| 1 MR | 258 C/kg |
| 2 MR | 516 C/kg |
| 5 MR | 1290 C/kg |
| 10 MR | 2580 C/kg |
| 25 MR | 6450 C/kg |
| 50 MR | 12900 C/kg |
| 100 MR | 25800 C/kg |