Convert Coulombs per square foot to Coulombs per square inch
Convert Coulombs per square foot (C/ft²) to Coulombs per square inch (C/in²) instantly and accurately.
Conversion Formula
C/in² = C/ft² × 0.006944444444
About Coulombs per square foot
The coulomb per square foot (C/ft²) equals exactly 1/(0.3048)² C/m² ≈ 10.7639 C/m², used in North American electrostatic specifications for insulating flooring, workbench surfaces, and static-dissipative materials. ANSI/ESD standards specify electrostatic charge decay and surface charge limits in C/ft²; antistatic mat and flooring performance is rated in C/ft². 1 C/ft² ≈ 10.764 C/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
| Coulombs per square foot (C/ft²) | Coulombs per square inch (C/in²) |
|---|---|
| 1 C/ft² | 0.00694444 C/in² |
| 2 C/ft² | 0.0138889 C/in² |
| 5 C/ft² | 0.0347222 C/in² |
| 10 C/ft² | 0.0694444 C/in² |
| 25 C/ft² | 0.173611 C/in² |
| 50 C/ft² | 0.347222 C/in² |
| 100 C/ft² | 0.694444 C/in² |