mF\text{mF}

millifarad

Capacitanceexact by definition

The millifarad is one thousandth of a farad, equal to 1000 microfarads. It is a legitimate SI multiple but is rarely printed on parts, because the electronics industry writes the same value as microfarads instead. The factor of 1e-3 is exact, being an SI prefix.

Watch out: Because mF on older parts, especially motor and HVAC capacitors, was a common abbreviation for microfarad, a marking of mF should be treated as ambiguous and confirmed against the equipment rating rather than assumed to be millifarads.

1 mF\text{mF} 1,000 μF\mu\text{F}

One millifarad in every capacitance unit

1,000,000,000,000femtofarad (fF)
1,000,000,000picofarad (pF)
1,000,000,000micromicrofarad (μμF)
1,000,000nanofarad (nF)
1,000microfarad (μF)
1millifarad (mF)this unit
0.001farad (F)
0.000001kilofarad (kF)