Capacitance Converter

Convert between Farads, Microfarads, Nanofarads, Picofarads and more

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Quick Guide

  • 1 pF = 0.000001 µF
  • 10 pF = 0.00001 µF
  • 100 pF = 0.0001 µF
  • 1 nF = 0.001 µF
  • 10 nF = 0.01 µF
  • 100 nF = 0.1 µF
  • 1 µF = 1,000 nF

Ceramic: Small values (pF to µF), good for high frequency

Electrolytic: Larger values (µF to F), polarized

Tantalum: Medium values, stable, polarized

Film: Precise values, good for audio circuits

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What is Capacitance?

Capacitance is the ability of a system to store an electric charge. The unit of capacitance is the Farad (F), named after the English physicist Michael Faraday. A capacitor is a passive electronic component that stores energy in an electric field between its plates.

Why Convert Capacitance Units?

Capacitors come in a wide range of values, from picofarads (pF) in RF circuits to farads (F) in power systems. Converting between units is essential when:

  • Reading capacitor values marked in different units
  • Designing circuits that require specific capacitance values
  • Replacing capacitors with equivalent values
  • Understanding datasheets and specifications

Common Applications

Power Supply Filtering

Electrolytic capacitors (µF to F range) smooth out voltage fluctuations.

Signal Coupling

Film capacitors (nF to µF range) block DC while allowing AC signals to pass.

Timing Circuits

Ceramic capacitors (pF to nF range) work with resistors to create delays.

RF Circuits

Small value capacitors (pF range) tune and filter radio frequencies.

Capacitance Unit Conversion Formulas

All capacitance units can be converted to Farads using these multipliers:

Unit Symbol Equivalent in Farads Common Uses
Farad F 1 F Supercapacitors, power systems
Millifarad mF 0.001 F Large electrolytic capacitors
Microfarad µF 0.000001 F Common electrolytic and film capacitors
Nanofarad nF 0.000000001 F Ceramic capacitors, timing circuits
Picofarad pF 0.000000000001 F RF circuits, small ceramic capacitors
Kilofarad kF 1000 F Supercapacitors, energy storage
Abfarad abF 109 F Obsolete unit (CGS system)
Statfarad statF 1.11265 × 10-12 F Electrostatic systems (CGS)

Conversion Examples

µF to nF

1 µF = 1000 nF
10 µF = 10,000 nF
0.1 µF = 100 nF

nF to pF

1 nF = 1000 pF
10 nF = 10,000 pF
0.1 nF = 100 pF

F to µF

1 F = 1,000,000 µF
0.001 F = 1000 µF
0.000001 F = 1 µF

pF to µF

1000 pF = 0.001 µF
10,000 pF = 0.01 µF
100,000 pF = 0.1 µF

Frequently Asked Questions

These are different units of capacitance representing different scales:

  • 1 µF (microfarad) = 1,000 nF (nanofarad)
  • 1 nF = 1,000 pF (picofarad)
  • 1 µF = 1,000,000 pF

pF are used for very small capacitors (like in RF circuits), nF for small to medium values (timing circuits), and µF for larger capacitors (power filtering).

Many small capacitors use a 3-digit code where:

  • First two digits are the significant figures
  • Third digit is the multiplier (number of zeros to add)
  • The value is in picofarads (pF)

Example: "104" means 10 followed by 4 zeros = 100,000 pF = 100 nF = 0.1 µF

For power supply filtering:

  • Electrolytic capacitors are commonly used (µF to mF range)
  • Choose a voltage rating at least 20% higher than your supply voltage
  • For high-frequency noise, add a small ceramic capacitor (0.1 µF) in parallel
  • For very clean power, consider multiple capacitors of different values

Electrolytic and tantalum capacitors are polarized because of their construction:

  • They use a chemical electrolyte that only works with one voltage polarity
  • Reversing the voltage can damage the capacitor or cause it to fail
  • Always observe the correct polarity markings (+/- or stripe)
  • Non-polarized capacitors (ceramic, film) can be connected either way

Capacitor tolerance varies by type:

  • Ceramic: ±5% to ±20% (some precision types ±1%)
  • Electrolytic: ±20% is common
  • Film: ±1% to ±10%
  • Tantalum: ±10% to ±20%

Temperature and voltage can also affect capacitance values, especially with ceramic capacitors.

Learn Capacitance Conversion

This tool helps you master capacitance measurement by teaching:

  • How to convert between different capacitance scales (pF, nF, µF, F)
  • The meaning of scientific prefixes (micro-, nano-, pico-)
  • Real-world capacitor values for different applications
  • How to read capacitor codes and markings
  • The relationship between capacitance units and their multipliers
  • Practical applications of different capacitor sizes

Tip: Start with µF to nF conversions as they're most common in beginner electronics.

Farad (F): The base unit. Think of it as a "bucket" for electrical charge. 1 Farad stores 1 Coulomb per Volt.

Microfarad (µF): "Micro" means one-millionth. 1 µF = 0.000001 F. Like a small cup compared to the Farad bucket.

Nanofarad (nF): "Nano" means one-billionth. 1 nF = 0.000000001 F. Like a teaspoon compared to the bucket.

Picofarad (pF): "Pico" means one-trillionth. 1 pF = 0.000000000001 F. Like a few drops of water.

Millifarad (mF): "Milli" means one-thousandth. 1 mF = 0.001 F.

Memory Trick: Remember the order: F → mF → µF → nF → pF
Each step right multiplies by 1000: 1 µF = 1000 nF = 1,000,000 pF

Picofarads (pF): Use for high-frequency circuits like:

  • Radio tuning (1-1000 pF)
  • Oscillator circuits
  • RF filters
  • Ceramic disc capacitors

Nanofarads (nF): Perfect for:

  • Timing circuits (0.1-100 nF)
  • Audio filters
  • Coupling capacitors
  • Bypass capacitors

Microfarads (µF): Most common for:

  • Power supply filtering (10-1000 µF)
  • Audio amplifiers
  • Motor starters
  • Energy storage

Farads (F): Used in:

  • Supercapacitors
  • Backup power systems
  • Energy harvesting
  • Electric vehicle systems

Smartphone

10-100 pF: Touchscreen sensors
1-10 µF: Power management
100-1000 µF: Camera flash charge storage

Car Audio System

0.1-1 µF: Tweeter crossover
10-100 µF: Amplifier coupling
1-5 F: Bass amplifier power reserve

Computer Power Supply

0.1 µF: High-frequency noise filtering
470-2200 µF: Main voltage smoothing
10-100 nF: Motherboard decoupling

LED Flashlight

1-10 µF: Driver circuit smoothing
0.1-1 F: Rechargeable power bank (if present)
10-100 pF: Optional brightness control

Let's convert 0.47 µF to nF manually (then verify with the converter):

  1. Step 1: Identify the relationship: 1 µF = 1000 nF
  2. Step 2: Multiply: 0.47 × 1000 = 470
  3. Step 3: Add units: 0.47 µF = 470 nF

Another example: Convert 2200 pF to µF

  1. Step 1: Remember: 1 µF = 1,000,000 pF
  2. Step 2: Divide: 2200 ÷ 1,000,000 = 0.0022
  3. Step 3: Add units: 2200 pF = 0.0022 µF
  4. Step 4: (Optional) Convert to nF: 0.0022 × 1000 = 2.2 nF
Pro Tip: When converting from larger to smaller units (µF → nF → pF), multiply. When converting from smaller to larger units (pF → nF → µF), divide.

Typical capacitor values you'll encounter:

  • pF range: 10, 22, 47, 100, 220, 470, 1000 (1nF)
  • nF range: 1, 2.2, 4.7, 10, 22, 47, 100, 220, 470, 1000 (1µF)
  • µF range: 0.1, 0.22, 0.47, 1, 2.2, 4.7, 10, 22, 47, 100, 220, 470, 1000 (0.001F)
  • F range: 0.001, 0.01, 0.1, 1, 5, 10, 50 (supercapacitors)

What your input number means:

  • 1.0 = Exactly one unit
  • 0.1 = One-tenth of a unit
  • 0.001 = One-thousandth of a unit
  • 1000 = One thousand units
  • 1e-6 = Scientific notation for 0.000001

Note: Capacitor values follow "preferred number" series (E6, E12) for manufacturing standardization.

Reading your converted value:

  • Very small numbers (0.000xxx): You're converting to a much larger unit (e.g., pF → F)
  • Very large numbers (1000+): You're converting to a much smaller unit (e.g., F → pF)
  • Numbers around 1-1000: You're converting between adjacent units (e.g., µF → nF)

Scientific notation results:

  • 1.23e-6 means 0.00000123
  • 4.7e3 means 4700
  • Negative exponent (e-): Move decimal left
  • Positive exponent (e+): Move decimal right

Practical interpretation:

  • If converting µF → pF gives 1,000,000: This tells you µF are 1 million times larger than pF
  • If converting pF → µF gives 0.000001: This tells you pF are 1 million times smaller than µF
  • The conversion factor itself teaches you the relationship between units

Mistake #1: Confusing multiplication and division direction

  • Wrong: Converting 1 µF to pF by dividing by 1000
  • Right: Multiply by 1,000,000 (since µF are larger)

Mistake #2: Forgetting the decimal placement

  • Wrong: 0.1 µF = 10 nF (off by factor of 10)
  • Right: 0.1 µF = 100 nF

Mistake #3: Misreading capacitor codes

  • "104" is NOT 10 and 4 separately
  • It's 10 followed by 4 zeros = 100,000 pF

Mistake #4: Confusing capacitance with resistance conversion

  • Capacitance: Each step = ×1000 or ÷1000
  • Resistance: Each step = ×1000 or ÷1000 too, but different units!
  • Don't mix up capacitors (F) with resistors (Ω)

Mistake #5: Assuming all capacitors with same value are interchangeable

  • Value matters, but so does voltage rating, tolerance, and type
  • A 10 µF ceramic capacitor ≠ 10 µF electrolytic in all applications

Memory shortcuts for exams:

  • F → µF: Multiply by 1,000,000 (add six zeros)
  • µF → nF: Multiply by 1,000 (add three zeros)
  • nF → pF: Multiply by 1,000 (add three zeros)
  • Reverse conversions: Divide instead of multiply

Quick estimation techniques:

  • 1 µF ≈ 1000 nF (exact: 1000)
  • 1 nF ≈ 1000 pF (exact: 1000)
  • 1 µF ≈ 1,000,000 pF (exact: 1,000,000)
  • For rough estimates, round 0.47 to 0.5

Common exam conversions to memorize:

  • 0.1 µF = 100 nF
  • 0.01 µF = 10 nF
  • 0.001 µF = 1 nF
  • 10 nF = 10,000 pF
  • 100 pF = 0.0001 µF

Test strategy:

  1. Identify what you're converting FROM and TO
  2. Determine if you multiply or divide
  3. Use the ×1000 or ÷1000 relationship between adjacent units
  4. Double-check decimal placement
  5. Verify with quick mental math: "Should this number get bigger or smaller?"

Acronyms to remember order:

  • Funny Men Use Nice Pens: F → m → µ → n → p
  • Frogs Make Ugly Noises Periodically: F → m → µ → n → p
  • Five Men Under North Pole: F → m → µ → n → p

Visual memory aids:

  • Imagine a staircase: Each step down multiplies by 1000
  • Think of Russian nesting dolls: pF inside nF inside µF inside mF inside F
  • Picture a zoom-out: pF (microscopic) → nF (tiny) → µF (small) → F (large)

Finger counting method:

  1. Hold up fingers for each step between units
  2. F to µF: F-m-µ (three fingers = ×1000×1000×1000 = ×1,000,000)
  3. µF to pF: µ-n-p (two fingers = ×1000×1000 = ×1,000,000)
  4. Each finger represents ×1000

Real-world analogies:

  • pF: Grain of sand
  • nF: Teaspoon of sand
  • µF: Cup of sand
  • mF: Bucket of sand
  • F: Truckload of sand

Create a mental scale:

Unit Visual Comparison Typical Size Color Hint
pF Grain of rice, ant, pinhead 1-5mm diameter Blue/Ceramic
nF Pea, small button 3-8mm diameter Yellow/Beige
µF Grape, marble, battery 5-20mm long Black/Blue can
mF AA battery, marker 10-50mm long Silver can
F Soda can, flashlight 20-100mm long Green/Black cylinder

Draw this ladder in your notes:

        F  (Farad)        ×1000
        ↓
        mF (Millifarad)   ×1000
        ↓
        µF (Microfarad)   ×1000
        ↓
        nF (Nanofarad)    ×1000
        ↓
        pF (Picofarad)

Use color coding:

  • ● Red for pF (tiny, high frequency)
  • ● Orange for nF (small, timing)
  • ● Yellow for µF (medium, common)
  • ● Green for mF (large, power)
  • ● Blue for F (huge, energy)

A: These follow the E-series preferred numbers. The E6 series (20% tolerance) includes: 1.0, 1.5, 2.2, 3.3, 4.7, 6.8. These values are logarithmically spaced so manufacturers can cover a wide range with few values.

A: Yes! 0.1 µF = 100 nF exactly. They're the same value, just different units. This is why conversion is so important - you might see the same value written differently in various schematics or datasheets.

A: Three-digit codes: First two digits × 10^(third digit) = value in pF. Examples:

  • 104 = 10 × 10^4 = 100,000 pF = 100 nF = 0.1 µF
  • 223 = 22 × 10^3 = 22,000 pF = 22 nF = 0.022 µF
  • 471 = 47 × 10^1 = 470 pF

A: Supercapacitors can reach 5,000 Farads (5 kF)! These are used for energy storage, not filtering. Regular electrolytic capacitors typically max out around 1 Farad for large power applications.

A: It depends on the application:

  • Critical: Timing circuits, filters, oscillators (need exact values)
  • Flexible: Power supply filtering, decoupling (20-50% tolerance often OK)
  • Rule of thumb: You can usually go up to 2x the value for non-critical applications

Important Notes About Accuracy

This converter provides mathematical conversions only. Real-world capacitor values have tolerances (typically ±5% to ±20%).

Conversion accuracy:

  • Mathematical conversions are exact (1 µF = 1000 nF exactly)
  • Real capacitors may vary from their marked values
  • Temperature, age, and voltage affect actual capacitance
  • Use this tool for learning and design, then verify with actual measurements

Educational purpose:

  • This tool teaches unit relationships and conversion principles
  • It doesn't account for practical circuit considerations
  • Always consult component datasheets for critical applications
  • When in doubt, measure actual capacitance with a meter

Practical limitations:

  • Very large or small values may not exist as physical components
  • Some conversions (like statF) are for theoretical understanding only
  • Circuit behavior depends on more than just capacitance value
  • Use this as a learning aid, not as sole design verification

Educational Content Update

Last updated: November 2025

This learning section was enhanced to provide comprehensive educational support for students and beginners in electronics.

What's included in this educational version:

  • Beginner-friendly explanations of capacitance concepts
  • Step-by-step conversion guidance
  • Common mistake identification and avoidance
  • Exam and test preparation strategies
  • Visual learning aids and memory techniques
  • Real-world application examples

Conversion accuracy maintained:

  • All mathematical conversions remain unchanged
  • Calculation formulas preserved exactly
  • Unit conversion factors unmodified
  • Tool functionality identical to original

Future learning enhancements planned:

  • Interactive capacitance visualization
  • Circuit simulation examples
  • Quiz mode for self-testing
  • More real-world component examples

This educational content is regularly reviewed and updated based on student feedback and teaching best practices.

Related Electrical Tools

Understanding capacitance is just one aspect of circuit design. You might also find our inductance converter useful for working with coils and transformers, or the impedance calculator for analyzing AC circuit behavior. For broader electrical calculations, explore our Ohm's Law tool to understand the relationship between voltage, current, and resistance in your circuits.

Quick Conversions
1 µF → 1000 nF 1 nF → 1000 pF 0.1 µF → 100 nF 100 pF → 0.1 nF 1 F → 1,000,000 µF 1000 µF → 0.001 F
Capacitance Calculator

Capacitance: 0 F

Unit Definitions
Farad (F)
The SI unit of capacitance. A capacitor has a capacitance of 1 farad when 1 coulomb of charge causes a potential difference of 1 volt.
Microfarad (µF)
1 µF = 10-6 F. Common in electronics for moderate capacitance values.
Nanofarad (nF)
1 nF = 10-9 F. Used for small capacitors in consumer electronics.
Picofarad (pF)
1 pF = 10-12 F. Used in high-frequency circuits like RF applications.