Convert Milliroentgens to Microcoulombs per kilogram
Convert Milliroentgens (mR) to Microcoulombs per kilogram (µC/kg) instantly and accurately.
Conversion Formula
µC/kg = mR × 0.258
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.
About Microcoulombs per kilogram
The microcoulomb per kilogram (µC/kg) equals 10⁻⁶ C/kg ≈ 3.88 mR. Used in precision ionisation chamber measurements for X-ray beam quality characterisation; national standards laboratories express free-air chamber calibration factors in µC/kg. 1 µC/kg = 10⁻⁶ C/kg = 10⁻³ mC/kg.
Quick Reference Table
| Milliroentgens (mR) | Microcoulombs per kilogram (µC/kg) |
|---|---|
| 1 mR | 0.258 µC/kg |
| 2 mR | 0.516 µC/kg |
| 5 mR | 1.29 µC/kg |
| 10 mR | 2.58 µC/kg |
| 25 mR | 6.45 µC/kg |
| 50 mR | 12.9 µC/kg |
| 100 mR | 25.8 µC/kg |