Convert Picofarads per centimetre to Farads per metre
Convert Picofarads per centimetre (pF/cm) to Farads per metre (F/m) instantly and accurately.
Conversion Formula
F/m = pF/cm × 1.000000000e-10
About Picofarads per centimetre
The picofarad per centimetre (pF/cm) equals 10⁻¹⁰ F/m = 100 pF/m, used for transmission-line capacitance per unit length in RF engineering. A standard 50 Ω air-dielectric coaxial line has capacitance per unit length ≈67 pF/m ≈0.67 pF/cm; PTFE coax gives ≈0.9 pF/cm. RF substrate characterisation often quotes pF/cm. 1 pF/cm = 10⁻¹⁰ F/m.
About Farads per metre
The farad per metre (F/m) is the SI coherent unit of permittivity. It is an extremely large unit in practice - the vacuum permittivity ε₀ is only 8.854 × 10⁻¹² F/m. Permittivities in F/m arise in models of quasi-metallic electrolytes and ultralow-frequency behaviour of plasma where ionic screening raises the effective dielectric constant enormously. 1 F/m = 10³ mF/m.
Quick Reference Table
| Picofarads per centimetre (pF/cm) | Farads per metre (F/m) |
|---|---|
| 1 pF/cm | 1 × 10-10 F/m |
| 2 pF/cm | 2 × 10-10 F/m |
| 5 pF/cm | 5 × 10-10 F/m |
| 10 pF/cm | 1 × 10-9 F/m |
| 25 pF/cm | 2.5 × 10-9 F/m |
| 50 pF/cm | 5 × 10-9 F/m |
| 100 pF/cm | 1 × 10-8 F/m |