Convert Coulombs per kilogram to Femtocoulombs per kilogram
Convert Coulombs per kilogram (C/kg) to Femtocoulombs per kilogram (fC/kg) instantly and accurately.
Conversion Formula
fC/kg = C/kg × 1000000000000000
About Coulombs per kilogram
The coulomb per kilogram (C/kg) is the SI derived unit of radiation exposure, equal to 1 coulomb of ion charge liberated per kilogram of dry air. It replaced the roentgen in SI. Calibration of clinical X-ray beams with free-air ionisation chambers and parallel-plate chambers yields results in C/kg. 1 C/kg ≈ 3876 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
| Coulombs per kilogram (C/kg) | Femtocoulombs per kilogram (fC/kg) |
|---|---|
| 1 C/kg | 1 × 1015 fC/kg |
| 2 C/kg | 2 × 1015 fC/kg |
| 5 C/kg | 5 × 1015 fC/kg |
| 10 C/kg | 1 × 1016 fC/kg |
| 25 C/kg | 2.5 × 1016 fC/kg |
| 50 C/kg | 5 × 1016 fC/kg |
| 100 C/kg | 1 × 1017 fC/kg |