Electrical
FtofF
Convert farads (F) to femtofarads (fF).
Factor1 F = 1e+15 fF
Converter
F
Accepts numbers or expressions, e.g. 150 + 14.7
Result
fF
Rendered to 6 significant figures.
Formula
Formula
fF = F × 1e+15
Multiply any value in farads by 1e+15 to obtain the value in femtofarads.
Worked example
Convert 1 F to fF.
- 01Start with 1 F.
- 02Multiply by the conversion factor: 1 × 1e+15 = 1e+15 fF.
Result1 F = 1e+15 fF
Conversion table
| F | fF |
|---|---|
| 1 | 1e+15 |
| 2 | 2e+15 |
| 5 | 5e+15 |
| 10 | 1e+16 |
| 20 | 2e+16 |
| 50 | 5e+16 |
| 100 | 1e+17 |
| 200 | 2e+17 |
| 500 | 5e+17 |
| 1000 | 1e+18 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from F to fF?
1 F equals 1e+15 fF. To convert, multiply the value in farads by 1e+15.
How do I convert 1 F to fF?
1 F = 1e+15 fF. For any value, multiply by 1e+15.
How do I convert fF back to F?
Divide by the same factor — or equivalently, multiply by 1e-15. So 1 fF = 1e-15 F.
When would I need to convert farad to femtofarad?
Capacitance conversions between F and fF are needed in power-factor-correction sizing, filter design, sensor electronics and motor-starter specification. Microfarads dominate power capacitor and motor-run/start applications; nanofarads and picofarads cover decoupling and RF circuit design.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).