Convert Femtocoulombs per kilogram to Milliroentgens
Convert Femtocoulombs per kilogram (fC/kg) to Milliroentgens (mR) instantly and accurately.
Conversion Formula
mR = fC/kg × 3.875968992e-9
About Femtocoulombs per kilogram
The femtocoulomb per kilogram (fC/kg) equals 10⁻¹⁵ C/kg. Used in computational dosimetry to characterise the ionisation yield from single low-energy photon interactions in nanogram air volumes; ultra-sensitive free-air ionisation chamber simulations in microdosimetry research report air-ionisation at the fC/kg level. 1 fC/kg = 10⁻¹⁵ C/kg = 10⁻³ pC/kg.
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
| Femtocoulombs per kilogram (fC/kg) | Milliroentgens (mR) |
|---|---|
| 1 fC/kg | 3.876 × 10-9 mR |
| 2 fC/kg | 7.752 × 10-9 mR |
| 5 fC/kg | 1.938 × 10-8 mR |
| 10 fC/kg | 3.876 × 10-8 mR |
| 25 fC/kg | 9.69 × 10-8 mR |
| 50 fC/kg | 1.938 × 10-7 mR |
| 100 fC/kg | 3.876 × 10-7 mR |