Convert Coulombs per square inch to Millicoulombs per square metre
Convert Coulombs per square inch (C/in²) to Millicoulombs per square metre (mC/m²) instantly and accurately.
Conversion Formula
mC/m² = C/in² × 1550003.1
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 Millicoulombs per square metre
The millicoulomb per square metre (mC/m²) equals 10⁻³ C/m², the scale for triboelectric charging of common plastics and electrostatic spray-coating processes. Rubbed polytetrafluoroethylene (PTFE) accumulates 1-10 mC/m²; electrostatic powder coating guns deposit 1-5 mC/m² on grounded work pieces; thundercloud base charge density before lightning is 1-5 mC/m². 1 mC/m² = 10⁻³ C/m² = 10³ µC/m².
Quick Reference Table
| Coulombs per square inch (C/in²) | Millicoulombs per square metre (mC/m²) |
|---|---|
| 1 C/in² | 1550000 mC/m² |
| 2 C/in² | 3100010 mC/m² |
| 5 C/in² | 7750020 mC/m² |
| 10 C/in² | 15500000 mC/m² |
| 25 C/in² | 38750100 mC/m² |
| 50 C/in² | 77500200 mC/m² |
| 100 C/in² | 155000000 mC/m² |