To convert farads to millifarads, multiply by 1000. That factor is the whole relationship: both units measure how much charge a component stores per volt, so the conversion is a proportion with no offset and no substance-specific constant.
One milli farad is one thousandth of a farad (1e-3 farads). The farad is the SI unit of capacitance: one coulomb of charge stored per volt applied. A whole farad is enormous, which is why practical parts are labelled in fractions of one.
Capacitor labelling. The same part may be printed 100 nF, 0.1 uF, or the three-digit code 104, and all three mean the same component. Nanofarads are the awkward middle: European schematics favour nF, American ones favour uF. Two tables follow: rounded steps for quick lookup, and a set of real reference quantities converted into millifarads, which is usually more useful than the bare number.
The formula
farads- The amount you are converting, in farads
1000- The exact number of millifarads in one farad
millifarads- The converted result
How it works, step by step
- Enter the value in farads.
- It is multiplied by 1000, the exact factor between the two units.
- The answer is shown in millifarads, with the reverse conversion beneath it.
- Check the reference table if you want a figure of comparable size.
Worked examples
Supercapacitor cell: 1 F in millifarads
Take supercapacitor cell, roughly 1 F. The conversion is a single multiplication — 1 × 1000 — giving 1000 mF. Because the relationship is proportional, doubling the input doubles the answer to 2000 mF.
Power supply smoothing capacitor: 0.0047 F in millifarads
Power supply smoothing capacitor comes to about 0.0047 F. Multiplying by the factor: 0.0047 × 1000 = 4.7 mF. Dividing the answer back by 1000 returns the figure you started with, which is the quickest way to check you have the factor the right way up.
How to read your score
Frequently asked questions
How many millifarads are in one farad?
Exactly 1000. Every figure on this page is that one number multiplied by your input, so the only rounding is at the display step.
What is the formula to convert farads to millifarads?
millifarads = farads × 1000. Reversed, farads = millifarads ÷ 1000, which is the same as multiplying by 0.001.
Which is the bigger unit, the farad or the millifarad?
The farad. One farad equals 1000 millifarads.
What does this quantity actually measure?
Both units measure how much charge a component stores per volt. That is why a single factor is enough: there is no temperature offset and no material property involved, unlike conversions that cross between different quantities.
What is a farad?
The farad is the SI unit of capacitance: one coulomb of charge stored per volt applied. A whole farad is enormous, which is why practical parts are labelled in fractions of one.
What is a millifarad?
One milli farad is one thousandth of a farad (1e-3 farads).
Why does my answer differ from another converter?
Almost always because the other tool rounded the factor before multiplying. This page keeps full double precision through the calculation and rounds only for display, and it prints the factor it used so you can see where any difference came from.
Farads to millifarads reference tables
| Farads | Millifarads |
|---|---|
| 0.5 F | 500 mF |
| 1 F | 1000 mF |
| 2 F | 2000 mF |
| 3 F | 3000 mF |
| 5 F | 5000 mF |
| 10 F | 10,000 mF |
| 20 F | 20,000 mF |
| 25 F | 25,000 mF |
| 50 F | 50,000 mF |
| 75 F | 75,000 mF |
| 100 F | 100,000 mF |
| 250 F | 250,000 mF |
| 500 F | 500,000 mF |
| 1000 F | 1e+06 mF |
| 5000 F | 5e+06 mF |
Exact factor: 1 farad = 1000 millifarads.
| Quantity | F | mF |
|---|---|---|
| Crystal load capacitor | 2.200e-11 F | 2.2e-08 mF |
| Decoupling capacitor | 1e-07 F | 0.0001 mF |
| Audio coupling capacitor | 1e-06 F | 0.001 mF |
| Motor-run capacitor | 2.5e-05 F | 0.025 mF |
| Power supply smoothing capacitor | 0.0047 F | 4.7 mF |
| Supercapacitor cell | 1 F | 1000 mF |
Published reference values, converted with the same factor this page uses.