Convert Femtocoulombs per kilogram to Megaroentgens
Convert Femtocoulombs per kilogram (fC/kg) to Megaroentgens (MR) instantly and accurately.
Conversion Formula
MR = fC/kg × 3.875968992e-18
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 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.
Quick Reference Table
| Femtocoulombs per kilogram (fC/kg) | Megaroentgens (MR) |
|---|---|
| 1 fC/kg | 3.876 × 10-18 MR |
| 2 fC/kg | 7.752 × 10-18 MR |
| 5 fC/kg | 1.938 × 10-17 MR |
| 10 fC/kg | 3.876 × 10-17 MR |
| 25 fC/kg | 9.69 × 10-17 MR |
| 50 fC/kg | 1.938 × 10-16 MR |
| 100 fC/kg | 3.876 × 10-16 MR |