Convert Megaroentgens to Millicoulombs per kilogram
Convert Megaroentgens (MR) to Millicoulombs per kilogram (mC/kg) instantly and accurately.
Conversion Formula
mC/kg = MR × 258000
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 Millicoulombs per kilogram
The millicoulomb per kilogram (mC/kg) equals 10⁻³ C/kg ≈ 3.88 R. Used in high-dose-rate X-ray beam calibration protocols (IAEA TRS-398, AAPM TG-51) where free-air chambers accumulate mC/kg of charge per irradiation; high-energy medical linac beams deliver calibration exposures measured in mC/kg. 1 mC/kg = 10⁻³ C/kg ≈ 3.88 R.
Quick Reference Table
| Megaroentgens (MR) | Millicoulombs per kilogram (mC/kg) |
|---|---|
| 1 MR | 258000 mC/kg |
| 2 MR | 516000 mC/kg |
| 5 MR | 1290000 mC/kg |
| 10 MR | 2580000 mC/kg |
| 25 MR | 6450000 mC/kg |
| 50 MR | 12900000 mC/kg |
| 100 MR | 25800000 mC/kg |