To convert millifarads to microfarads, 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.
Microfarads cover electrolytics, motor-run capacitors and audio coupling — the values most repair jobs deal with. One milli farad is one thousandth of a farad (1e-3 farads).
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. The tables underneath give both a plain step-by-step lookup and a list of real quantities expressed in microfarads, so you can sanity-check whether your answer is a plausible size.
The formula
millifarads- The amount you are converting, in millifarads
1000- The exact number of microfarads in one millifarad
microfarads- The converted result
How it works, step by step
- Enter the value in millifarads.
- It is multiplied by 1000, the exact factor between the two units.
- The answer is shown in microfarads, with the reverse conversion beneath it.
- Check the reference table if you want a figure of comparable size.
Worked examples
Supercapacitor cell: 1000 mF in microfarads
Supercapacitor cell comes to about 1000 mF. Multiplying by the factor: 1000 × 1000 = 1e+06 µF. 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.
Motor-run capacitor: 0.025 mF in microfarads
Take motor-run capacitor, roughly 0.025 mF. The conversion is a single multiplication — 0.025 × 1000 — giving 25 µF. Because the relationship is proportional, doubling the input doubles the answer to 50 µF.
How to read your score
Frequently asked questions
How many microfarads are in one millifarad?
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 millifarads to microfarads?
microfarads = millifarads × 1000. Reversed, millifarads = microfarads ÷ 1000, which is the same as multiplying by 0.001.
Which is the bigger unit, the millifarad or the microfarad?
The millifarad. One millifarad equals 1000 microfarads.
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 millifarad?
One milli farad is one thousandth of a farad (1e-3 farads).
What is a microfarad?
Microfarads cover electrolytics, motor-run capacitors and audio coupling — the values most repair jobs deal with.
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.
Millifarads to microfarads reference tables
| Millifarads | Microfarads |
|---|---|
| 0.5 mF | 500 µF |
| 1 mF | 1000 µF |
| 2 mF | 2000 µF |
| 3 mF | 3000 µF |
| 5 mF | 5000 µF |
| 10 mF | 10,000 µF |
| 20 mF | 20,000 µF |
| 25 mF | 25,000 µF |
| 50 mF | 50,000 µF |
| 75 mF | 75,000 µF |
| 100 mF | 100,000 µF |
| 250 mF | 250,000 µF |
| 500 mF | 500,000 µF |
| 1000 mF | 1e+06 µF |
| 5000 mF | 5e+06 µF |
Exact factor: 1 millifarad = 1000 microfarads.
| Quantity | mF | µF |
|---|---|---|
| Crystal load capacitor | 2.2e-08 mF | 2.2e-05 µF |
| Decoupling capacitor | 0.0001 mF | 0.1 µF |
| Audio coupling capacitor | 0.001 mF | 1 µF |
| Motor-run capacitor | 0.025 mF | 25 µF |
| Power supply smoothing capacitor | 4.7 mF | 4700 µF |
| Supercapacitor cell | 1000 mF | 1e+06 µF |
Published reference values, converted with the same factor this page uses.