Convert Coulombs per square inch to Femtocoulombs per square metre
Convert Coulombs per square inch (C/in²) to Femtocoulombs per square metre (fC/m²) instantly and accurately.
Conversion Formula
fC/m² = C/in² × 1.550003100e+18
About Coulombs per square inch
The coulomb per square inch (C/in²) equals exactly 1/(0.0254)² C/m² ≈ 1 550.003 C/m², used in US insulation and dielectric material withstand specifications. Dielectric strength ratings for polymeric films in US datasheets are sometimes cross-referenced with C/in² for high-voltage applications; electrostatic precipitator collector plate performance is quoted in C/in² in some NEMA standards. 1 C/in² ≈ 1 550 C/m².
About Femtocoulombs per square metre
The femtocoulomb per square metre (fC/m²) equals 10⁻¹⁵ C/m², arising in scanning Kelvin probe measurements of oxide fixed charge. MOS interface state densities of 10¹ charges/cm² correspond to about 0.16 fC/m²; fixed charge in high-k gate dielectrics and SiO₂/Si interfaces is typically 10-100 fC/m². 1 fC/m² = 10⁻¹⁵ C/m² = 10⁻³ pC/m².
Quick Reference Table
| Coulombs per square inch (C/in²) | Femtocoulombs per square metre (fC/m²) |
|---|---|
| 1 C/in² | 1.55 × 1018 fC/m² |
| 2 C/in² | 3.1 × 1018 fC/m² |
| 5 C/in² | 7.75 × 1018 fC/m² |
| 10 C/in² | 1.55 × 1019 fC/m² |
| 25 C/in² | 3.875 × 1019 fC/m² |
| 50 C/in² | 7.75 × 1019 fC/m² |
| 100 C/in² | 1.55 × 1020 fC/m² |