Convert Femtocoulombs per cubic metre to Coulombs per US gallon
Convert Femtocoulombs per cubic metre (fC/m³) to Coulombs per US gallon (C/gal (US)) instantly and accurately.
Conversion Formula
C/gal (US) = fC/m³ × 3.785411784e-18
About Femtocoulombs per cubic metre
The femtocoulomb per cubic metre (fC/m³) equals 10⁻¹⁵ C/m³, the scale for charge density in the interstellar medium. The diffuse interstellar medium has electron density ~3×10⁴ /m³, giving charge density ≈5 fC/m³; radiation belt proton charge density in the inner Van Allen belt is in the fC/m³ range. 1 fC/m³ = 10⁻¹⁵ C/m³ = 10⁻³ pC/m³.
About Coulombs per US gallon
The coulomb per US gallon (C/gal) equals exactly 1/(231×(0.0254)³) C/m³ ≈264.172 C/m³, used in electrochemical water-treatment and flow-battery engineering in North America. Electrocoagulation systems are specified by charge dosage in C/gal (US) of treated water; flow battery electrolyte charge state is monitored in C/gal in North American plant documentation. 1 C/gal (US) ≈264.172 C/m³.
Quick Reference Table
| Femtocoulombs per cubic metre (fC/m³) | Coulombs per US gallon (C/gal (US)) |
|---|---|
| 1 fC/m³ | 3.785 × 10-18 C/gal (US) |
| 2 fC/m³ | 7.571 × 10-18 C/gal (US) |
| 5 fC/m³ | 1.893 × 10-17 C/gal (US) |
| 10 fC/m³ | 3.785 × 10-17 C/gal (US) |
| 25 fC/m³ | 9.464 × 10-17 C/gal (US) |
| 50 fC/m³ | 1.893 × 10-16 C/gal (US) |
| 100 fC/m³ | 3.785 × 10-16 C/gal (US) |