Convert Millicoulombs per kilogram to Milliroentgens
Convert Millicoulombs per kilogram (mC/kg) to Milliroentgens (mR) instantly and accurately.
Conversion Formula
mR = mC/kg × 3875.968992
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.
About Milliroentgens
The milliroentgen (mR) equals 2.58 × 10⁻⁷ C/kg. Standard unit in US health physics for area gamma surveys: personal dosimeters and Geiger counters in medical and industrial radiography settings display mR/h; NRC licence conditions often specify dose-rate limits in mR/h at facility boundaries. 1 mR = 2.58 × 10⁻⁷ C/kg.
Quick Reference Table
| Millicoulombs per kilogram (mC/kg) | Milliroentgens (mR) |
|---|---|
| 1 mC/kg | 3875.97 mR |
| 2 mC/kg | 7751.94 mR |
| 5 mC/kg | 19379.8 mR |
| 10 mC/kg | 38759.7 mR |
| 25 mC/kg | 96899.2 mR |
| 50 mC/kg | 193798 mR |
| 100 mC/kg | 387597 mR |