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Capacitance Conversion
Tool Description
Capacitance Conversion is an online capacitance unit converter that supports mutual conversion between farad (F), millifarad (mF), microfarad (μF), nanofarad (nF), and picofarad (pF). Enter any value and unit to instantly view corresponding results in all other units, suitable for electronic circuit design, component selection, teaching experiments, and more.
How to Use
- Enter value
Input the value to convert in the input field, supporting integers and decimals, e.g.,
100,0.047 - Select source unit
Choose the capacitance unit of the current value from the dropdown list (F/mF/μF/nF/pF)
- View results
Click the "Convert" button or press Enter, and the result area below will display corresponding values in all units, with a copy button on the right of each result for convenient use
Use Cases
- Electronic circuit design: Capacitors in circuit design are often marked with different units such as μF, nF, and pF. Schematic and PCB design require frequent unit conversions, and this tool can quickly complete them
- Component selection: When purchasing capacitors, suppliers may use different unit notations for capacitance values (e.g., 0.1 μF = 100 nF = 100,000 pF). Use this tool to quickly compare different marking methods
- Teaching & experiments: In physics and electronics education, capacitance unit conversion (e.g., 1 F = 10⁶ μF = 10⁹ nF = 10¹² pF) is a fundamental concept. Students can verify conversion results using this tool
Key Advantages
- Free & no registration
The online capacitance converter is completely free; just open the page to use it, with no account registration or software installation required
- Local & private
All conversions are done locally in your browser; your input data is never uploaded to any server, fully protecting your privacy
- Instant results
Conversions happen in real time as you type, with no waiting, and all unit results are shown at a glance
- Full unit coverage
Supports mutual conversion among 5 capacitance units: farad (F), millifarad (mF), microfarad (μF), nanofarad (nF), and picofarad (pF)
- High precision
Uses precise mathematical calculation; capacitance units follow a strict decimal thousand-fold relationship, ensuring accurate and reliable results with decimal input supported
- Cross-platform
Works smoothly on desktop, mobile, and tablet; the page is responsive and adapts to any screen, so you can convert capacitance units anytime, anywhere
Capacitance Unit Conversion Relationships
The following shows the conversion relationships between capacitance units, with farad (F) as the base unit:
| Unit Name | Abbreviation | Conversion Relationship | Equivalent F |
|---|---|---|---|
| Farad | F | 1 F = 1 F | 1 |
| Millifarad | mF | 1 mF = 0.001 F | 0.001 |
| Microfarad | μF | 1 μF = 10⁻⁶ F | 0.000001 |
| Nanofarad | nF | 1 nF = 10⁻⁹ F | 0.000000001 |
| Picofarad | pF | 1 pF = 10⁻¹² F | 0.000000000001 |
Common Capacitance Value Reference
The following shows common capacitance value ranges in electronic circuits and their typical applications:
| Application | Typical Value |
|---|---|
| High-frequency coupling / Resonance circuits | 1 pF ~ 100 pF |
| Timing circuits / Decoupling | 100 pF ~ 0.1 μF |
| Filtering / Bypass / Coupling | 0.1 μF ~ 100 μF |
| Power filtering / Energy storage | 100 μF ~ 10,000 μF |
| High-capacity energy storage | 1 mF ~ 100 mF |
| Supercapacitors / Electric vehicles | 1 F ~ 数千 F |
Capacitor Marking Identification Methods
Three-digit marking is the most common labeling method for small components such as ceramic capacitors. The first two digits represent the significant figures, and the third digit represents the power of 10 multiplier, with the unit being pF. For example, marking "104" means 10 × 10⁴ = 100,000 pF = 100 nF = 0.1 μF; marking "473" means 47 × 10³ = 47,000 pF = 47 nF = 0.047 μF.
Direct marking directly labels the value and unit on the capacitor casing, such as "100μF" or "10n". Electrolytic capacitors typically use direct marking, labeling both capacitance and voltage rating. Understanding these marking methods, combined with this tool, allows quick conversion between different units.
FAQ
Farad (symbol F) is the standard unit of capacitance in the International System of Units (SI), named after British physicist Michael Faraday. One farad is defined as: when the potential difference between two plates of a capacitor is 1 volt (V), the stored charge is 1 coulomb (C), i.e., 1 F = 1 C/V. In practical electronic circuits, 1 farad is a very large unit, so microfarad (μF), nanofarad (nF), and picofarad (pF) are more commonly used.
The conversion between capacitance units follows a thousand-based system: 1 F = 1,000 mF = 1,000,000 μF = 1,000,000,000 nF = 1,000,000,000,000 pF. Specifically: 1 μF = 1,000 nF = 1,000,000 pF; 1 nF = 1,000 pF; 1 mF = 1,000 μF. This thousand-based relationship is consistent with metric unit prefixes (milli-, micro-, nano-, pico-), making it easy to remember and convert.
1 farad (F) is an extremely large capacitance value in electronic circuits. Common ceramic capacitors are typically in the pF~nF range, and electrolytic capacitors are typically in the μF range (e.g., 10 μF, 100 μF, 1000 μF). It wasn't until the advent of supercapacitors (EDLC) that F-level capacitance became achievable, with individual supercapacitors reaching thousands of farads. Supercapacitors are mainly used in energy storage, electric vehicles, and backup power applications. Capacitors on ordinary circuit boards are predominantly in μF, nF, and pF ranges.
This is the three-digit marking system, with the unit being pF. The first two digits are significant figures, and the third digit is the multiplier (power of 10). For example: "104" = 10 × 10⁴ pF = 100,000 pF = 100 nF = 0.1 μF; "473" = 47 × 10³ pF = 47,000 pF = 47 nF = 0.047 μF; "101" = 10 × 10¹ pF = 100 pF. A letter suffix may also indicate tolerance grade (e.g., J=±5%, K=±10%, M=±20%).
No. All conversion calculations are performed entirely in your browser locally using pure JavaScript math. Your input data never leaves your device, so please feel free to use it.
This tool uses JavaScript double-precision floating-point numbers (64-bit IEEE 754) for calculations, which is sufficiently accurate for most everyday scenarios. Capacitance units follow a strict decimal thousand-fold relationship (1 F = 10³ mF = 10⁶ μF = 10⁹ nF = 10¹² pF) without approximate conversions, so results are exact within floating-point range. Up to 6 significant decimal places are retained, with excess digits automatically truncated.
Complete conversion in three steps. First, enter the value to convert in the input field, then select its corresponding capacitance unit (F/mF/μF/nF/pF) from the dropdown list; next, click the "Convert" button or press Enter, and the result area will immediately list corresponding values for all units, each with a copy button on the right for one-click copying.
It supports 5 common capacitance units. These are farad (F), millifarad (mF), microfarad (μF), nanofarad (nF), and picofarad (pF). Any two of these units can be converted bidirectionally. For example, entering a μF value simultaneously yields results in F, mF, nF, and pF, meeting different needs in circuit design and teaching.
Completely free with no registration required. This is a free online capacitance unit converter; just open the page to use it directly. No login, no usage limits, and no software installation needed, making it ideal for daily study and work.
Yes. The page uses a responsive design and works smoothly on desktop, mobile, and tablet. After opening it in a mobile browser, the value entry and unit selection interactions are optimized for touch, so you can convert capacitance units anytime, anywhere.
An online converter is more efficient and worry-free. Manually converting with a phone calculator requires memorizing thousand-based relationships and entering powers one by one, which is error-prone. This tool lists results for all 5 units at once and supports one-click copy, especially suitable for comparing multiple notations or batch-checking values.
This is a normal phenomenon caused by component tolerance. The tool's results are theoretically exact (e.g., 0.1 μF = 100 nF exactly). Real capacitors have production tolerances (commonly ±5%, ±10%, ±20%, marked as J/K/M). Capacitance also varies with temperature and voltage, so a slight measured deviation from the nominal conversion value is normal.
Content last updated：2026-07-16
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