Convert Farads to Attofarads
Convert Farads (F) to Attofarads (aF) instantly and accurately.
Conversion Formula
aF = F × 1.000000000e+18
About Farads
The farad (F) is the SI derived unit of electrical capacitance, equal to 1 coulomb per volt (1 C/V = 1 A²·s⁴·kg⁻¹·m⁻²), named after Michael Faraday (1791-1867). One farad is impractically large for classical components: electric double-layer supercapacitors (EDLC) are the only practical devices in the farad range, from 1 F coin cells to 3 000 F modules used in regenerative braking. 1 F = 10³ mF = 10⁶ µF.
About Attofarads
The attofarad (aF) equals 10⁻¹⁸ F, the scale for quantum-mechanical and nanoscale capacitances. Carbon-nanotube transistor gate capacitances are 1-100 aF; single-electron tunnel junctions in Coulomb-blockade devices operate in the attofarad range; scanning-probe microscopy tip-sample junctions at sub-nanometre separation approach 1 aF. 1 aF = 10⁻³ fF = 10⁻¹⁸ F.
Quick Reference Table
| Farads (F) | Attofarads (aF) |
|---|---|
| 1 F | 1 × 1018 aF |
| 2 F | 2 × 1018 aF |
| 5 F | 5 × 1018 aF |
| 10 F | 1 × 1019 aF |
| 25 F | 2.5 × 1019 aF |
| 50 F | 5 × 1019 aF |
| 100 F | 1 × 1020 aF |