Convert Coulombs per inch to Coulombs per foot
Convert Coulombs per inch (C/in) to Coulombs per foot (C/ft) instantly and accurately.
Conversion Formula
C/ft = C/in × 12
About Coulombs per inch
The coulomb per inch (C/in) equals exactly 1/0.0254 C/m ≈ 39.370 C/m, used in insulation specifications and dielectric withstand testing at the component level. Dielectric tape and insulating sleeve charge retention is sometimes expressed in C/in in US industry datasheets; PCB creepage and clearance charge density specifications for high-voltage designs appear in C/in. 1 C/in = 1/0.0254 C/m ≈ 39.370 C/m.
About Coulombs per foot
The coulomb per foot (C/ft) equals exactly 1/0.3048 C/m ≈ 3.2808 C/m, used in North American electrical engineering for charge per unit length on power cables and conductor specifications. High-voltage DC cable charge density ratings are sometimes quoted in C/ft in ANSI/NEMA specifications; lightning protection standards may express charge density per foot of conductor. 1 C/ft = 1/0.3048 C/m ≈ 3.2808 C/m.
Quick Reference Table
| Coulombs per inch (C/in) | Coulombs per foot (C/ft) |
|---|---|
| 1 C/in | 12 C/ft |
| 2 C/in | 24 C/ft |
| 5 C/in | 60 C/ft |
| 10 C/in | 120 C/ft |
| 25 C/in | 300 C/ft |
| 50 C/in | 600 C/ft |
| 100 C/in | 1200 C/ft |