Convert Millicoulombs per kilogram to Femtocoulombs per kilogram
Convert Millicoulombs per kilogram (mC/kg) to Femtocoulombs per kilogram (fC/kg) instantly and accurately.
Conversion Formula
fC/kg = mC/kg × 1000000000000
About Millicoulombs per kilogram
The millicoulomb per kilogram (mC/kg) equals 10⁻³ C/kg ≈ 3.88 R. Used in high-dose-rate X-ray beam calibration protocols (IAEA TRS-398, AAPM TG-51) where free-air chambers accumulate mC/kg of charge per irradiation; high-energy medical linac beams deliver calibration exposures measured in mC/kg. 1 mC/kg = 10⁻³ C/kg ≈ 3.88 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
| Millicoulombs per kilogram (mC/kg) | Femtocoulombs per kilogram (fC/kg) |
|---|---|
| 1 mC/kg | 1 × 1012 fC/kg |
| 2 mC/kg | 2 × 1012 fC/kg |
| 5 mC/kg | 5 × 1012 fC/kg |
| 10 mC/kg | 1 × 1013 fC/kg |
| 25 mC/kg | 2.5 × 1013 fC/kg |
| 50 mC/kg | 5 × 1013 fC/kg |
| 100 mC/kg | 1 × 1014 fC/kg |