Capacitance Converter
Convert between Farad, millifarad, microfarad, nanofarad, and picofarad instantly.
Type in any field and the others update automatically.
Type in any field — the others update instantly.
Capacitance measures how much electric charge a component stores for each volt applied across it. A one-farad capacitor holds one coulomb per volt, which is a huge amount of charge. That’s why nearly every capacitor you’ll handle is rated in some fraction of a farad.
Metric prefixes:
- 1 F = 1,000 mF (millifarads)
- 1 F = 1,000,000 µF (microfarads)
- 1 F = 1,000,000,000 nF (nanofarads)
- 1 F = 1,000,000,000,000 pF (picofarads)
Typical parts:
- Supercapacitor: 1–100 F
- Electrolytic capacitor: 1 µF to 10,000 µF
- Ceramic capacitor: 1 pF to 100 nF
Most conversions happen because schematics, parts catalogs, and PCB software don’t agree on a prefix. A 0.1 µF decoupling cap, a 100 nF cap, and a 100,000 pF cap are the same part written three ways. Recognizing that on sight saves a lot of second-guessing.
Two things the capacitance number alone won’t tell you. First, the voltage rating: go past it and the part fails, sometimes loudly. Second, the real value drifts from the printed one. Ceramic capacitors in particular shed a big chunk of their rating under DC bias and with age, so a 10 µF ceramic might behave like 4 µF once it’s actually in the circuit. For anything precise, trust a measurement over the marking.
How we build and check this converter
This converter runs entirely in your browser, so the numbers you enter stay on your device. The math behind it is written by hand and tested against worked examples and standard references before the page goes live.
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