Convert Femtocoulombs per square metre to Coulombs per square inch
Convert Femtocoulombs per square metre (fC/m²) to Coulombs per square inch (C/in²) instantly and accurately.
Conversion Formula
C/in² = fC/m² × 6.451600000e-19
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.
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.
Quick Reference Table
| Femtocoulombs per square metre (fC/m²) | Coulombs per square inch (C/in²) |
|---|---|
| 1 fC/m² | 6.452 × 10-19 C/in² |
| 2 fC/m² | 1.29 × 10-18 C/in² |
| 5 fC/m² | 3.226 × 10-18 C/in² |
| 10 fC/m² | 6.452 × 10-18 C/in² |
| 25 fC/m² | 1.613 × 10-17 C/in² |
| 50 fC/m² | 3.226 × 10-17 C/in² |
| 100 fC/m² | 6.452 × 10-17 C/in² |