Convert Femtocoulombs per metre to Coulombs per inch
Convert Femtocoulombs per metre (fC/m) to Coulombs per inch (C/in) instantly and accurately.
Conversion Formula
C/in = fC/m × 2.540000000e-17
About Femtocoulombs per metre
The femtocoulomb per metre (fC/m) equals 10⁻¹⁵ C/m, arising in scanning probe measurements of charged surface features and in single-molecule electrostatic force microscopy. A single elementary charge (1.6 × 10⁻¹⁹ C) localised on a 1 µm polymer segment gives about 0.16 fC/m; EFM tip-sample interaction models use fC/m-scale induced charge distributions. 1 fC/m = 10⁻¹⁵ C/m = 10⁻³ pC/m.
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.
Quick Reference Table
| Femtocoulombs per metre (fC/m) | Coulombs per inch (C/in) |
|---|---|
| 1 fC/m | 2.54 × 10-17 C/in |
| 2 fC/m | 5.08 × 10-17 C/in |
| 5 fC/m | 1.27 × 10-16 C/in |
| 10 fC/m | 2.54 × 10-16 C/in |
| 25 fC/m | 6.35 × 10-16 C/in |
| 50 fC/m | 1.27 × 10-15 C/in |
| 100 fC/m | 2.54 × 10-15 C/in |