Convert Farads per metre to Femtofarads per metre
Convert Farads per metre (F/m) to Femtofarads per metre (fF/m) instantly and accurately.
Conversion Formula
fF/m = F/m × 1000000000000000
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.
About Femtofarads per metre
The femtofarad per metre (fF/m) equals 10⁻¹⁵ F/m, the smallest practical permittivity scale. Permittivity of near-perfect vacuum regions at sub-pF/m levels, noise-floor permittivity in cryogenic microwave resonators, and modelled permittivity of hypothetical near-zero-index metamaterial layers all span the fF/m range. 1 fF/m = 10⁻¹⁵ F/m = 10⁻³ pF/m.
Quick Reference Table
| Farads per metre (F/m) | Femtofarads per metre (fF/m) |
|---|---|
| 1 F/m | 1 × 1015 fF/m |
| 2 F/m | 2 × 1015 fF/m |
| 5 F/m | 5 × 1015 fF/m |
| 10 F/m | 1 × 1016 fF/m |
| 25 F/m | 2.5 × 1016 fF/m |
| 50 F/m | 5 × 1016 fF/m |
| 100 F/m | 1 × 1017 fF/m |