Convert Between Capacitance Units Convert between farads, millifarads, microfarads, nanofarads, and picofarads.

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Capacitance Converter

Convert between farads, millifarads, microfarads, nanofarads, and picofarads.

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What Is Capacitance Converter?

A capacitance converter translates between different scales of the farad, the SI unit of electrical capacitance. One farad is the capacitance that stores one coulomb of charge at one volt — an enormous value in practical electronics. Most real components range from picofarads (pF, for RF circuits) through nanofarads (nF) to microfarads (µF, for power supply filtering). Millifarads (mF) and farads are encountered in supercapacitors and energy storage applications. This converter handles the five most common capacitance scales used in electronics design.

Why Use Capacitance Converter?

Covers pF to F — the full range of practical capacitance values.
Essential for reading capacitor markings and datasheets.
Real-time conversion for circuit design calculations.
Quick reference table.

Common Use Cases

Circuit Design

Convert between µF, nF, and pF for component selection.

Capacitor Selection

Translate between different notation styles used by manufacturers.

RF Engineering

Work with pF values for antenna matching and filter design.

Power Electronics

Switch between µF and mF when sizing power supply capacitors.

Technical Guide

The farad (F) is defined as C = Q/V — the charge stored per volt of potential difference.

• 1 F = 1,000 mF
• 1 mF = 1,000 µF
• 1 µF = 1,000 nF
• 1 nF = 1,000 pF

So: 1 F = 10⁶ µF = 10⁹ nF = 10¹² pF

Capacitor marking conventions:
• Ceramic capacitors often use a 3-digit code: first two digits are significant figures, third is the multiplier (in pF). "104" = 10 × 10⁴ pF = 100,000 pF = 100 nF = 0.1 µF.
• Electrolytic capacitors are typically marked in µF.

Common values:
• Decoupling capacitor: 100 nF (0.1 µF)
• Power supply filter: 100-10,000 µF
• Supercapacitor: 1-3,000 F

Tips & Best Practices

1
Ceramic cap code "104" = 100 nF = 0.1 µF. The third digit is the power of 10 in pF.
2
1 µF = 1,000 nF = 1,000,000 pF. Memorize these three scales.
3
A "1 farad" capacitor is enormous — only found in supercapacitors.
4
Standard capacitor values follow the E-series (E6, E12, E24) with preferred values.

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Frequently Asked Questions

Q How many nanofarads in a microfarad?

Exactly 1,000 nanofarads (nF) equal one microfarad (µF).

Q What does the 3-digit code on a ceramic capacitor mean?

The first two digits are significant figures, the third is the multiplier (power of 10). The result is in picofarads. "104" = 10 × 10⁴ pF = 100,000 pF = 0.1 µF.

Q How big is a farad?

Very large. Most electronic circuits use µF, nF, or pF. A 1F capacitor (supercapacitor) can be the size of a coin but stores significant energy.

Q What is a typical decoupling capacitor value?

100 nF (0.1 µF) is the standard decoupling capacitor value for digital ICs.

About This Tool

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