Convert Femtocoulombs per kilogram to Kiloroentgens
Convert Femtocoulombs per kilogram (fC/kg) to Kiloroentgens (kR) instantly and accurately.
Conversion Formula
kR = fC/kg × 3.875968992e-15
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 Kiloroentgens
The kiloroentgen (kR) equals 0.258 C/kg. Used in radiation hardness testing of electronics and legacy nuclear weapons effects literature; total ionising exposure inside nuclear facilities during design-basis accident scenarios is cited in kR; some older radiation therapy machine output specifications use kR/min. 1 kR = 0.258 C/kg = 10³ R.
Quick Reference Table
| Femtocoulombs per kilogram (fC/kg) | Kiloroentgens (kR) |
|---|---|
| 1 fC/kg | 3.876 × 10-15 kR |
| 2 fC/kg | 7.752 × 10-15 kR |
| 5 fC/kg | 1.938 × 10-14 kR |
| 10 fC/kg | 3.876 × 10-14 kR |
| 25 fC/kg | 9.69 × 10-14 kR |
| 50 fC/kg | 1.938 × 10-13 kR |
| 100 fC/kg | 3.876 × 10-13 kR |