Convert Kiloroentgens to Femtocoulombs per kilogram
Convert Kiloroentgens (kR) to Femtocoulombs per kilogram (fC/kg) instantly and accurately.
Conversion Formula
fC/kg = kR × 258000000000000
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.
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.
Quick Reference Table
| Kiloroentgens (kR) | Femtocoulombs per kilogram (fC/kg) |
|---|---|
| 1 kR | 2.58 × 1014 fC/kg |
| 2 kR | 5.16 × 1014 fC/kg |
| 5 kR | 1.29 × 1015 fC/kg |
| 10 kR | 2.58 × 1015 fC/kg |
| 25 kR | 6.45 × 1015 fC/kg |
| 50 kR | 1.29 × 1016 fC/kg |
| 100 kR | 2.58 × 1016 fC/kg |