Convert Femtocoulombs per cubic metre to Coulombs per cubic inch
Convert Femtocoulombs per cubic metre (fC/m³) to Coulombs per cubic inch (C/in³) instantly and accurately.
Conversion Formula
C/in³ = fC/m³ × 1.638706400e-20
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 cubic inch
The coulomb per cubic inch (C/in³) equals exactly 1/(0.0254)³ C/m³ ≈61 023.7 C/m³, used in US semiconductor and battery engineering. Volumetric charge capacity of lithium-ion battery electrodes is quoted in C/in³ in North American product datasheets; solid-state electrolyte charge density specifications in US engineering standards appear in C/in³. 1 C/in³ ≈61 024 C/m³ = 61.024 kC/m³.
Quick Reference Table
| Femtocoulombs per cubic metre (fC/m³) | Coulombs per cubic inch (C/in³) |
|---|---|
| 1 fC/m³ | 1.639 × 10-20 C/in³ |
| 2 fC/m³ | 3.277 × 10-20 C/in³ |
| 5 fC/m³ | 8.194 × 10-20 C/in³ |
| 10 fC/m³ | 1.639 × 10-19 C/in³ |
| 25 fC/m³ | 4.097 × 10-19 C/in³ |
| 50 fC/m³ | 8.194 × 10-19 C/in³ |
| 100 fC/m³ | 1.639 × 10-18 C/in³ |