Capacitance Conversion

Unit conversion and basic capacitor code decoding

Operating Mode

Required Parameters

Capacitance value

From unit

To unit

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Quick Answer

Capacitance units: 1 F = 10⁶ µF = 10⁹ nF = 10¹² pF. Each prefix step is ×1000. The standard decoupling capacitor is 100 nF (0.1 µF). Capacitor codes like 104 are in picofarads: 10 + 0000 = 100,000 pF = 100 nF.

Documentation

Calculateur de Conversion de Capacite

Convertissez entre unites de capacite.

Design Notes

Capacitance unit confusion is one of the most common errors in electronics design. Japanese datasheets prefer nF, American datasheets prefer µF. SPICE simulation uses 'u' for micro and 'm' for milli (not micro!) causing simulation errors.

Common Mistakes

1
Using 'm' for micro in SPICE — SPICE 'm' means milli (10⁻³). Use 'u' for micro (10⁻⁶).
2
Confusing capacitor code units with resistor code units — capacitor codes are in picofarads.
3
Not accounting for DC bias derating when selecting MLCC capacitors — actual capacitance can be 50-70% less than rated.

Knowledge Base

Quelles sont les unités de capacité ?

L'unité SI est le farad (F). En pratique : µF (10⁻⁶), nF (10⁻⁹), pF (10⁻¹²). Les condensateurs de découplage courants sont en nF–µF, les condensateurs RF en pF.

Comment convertir entre pF, nF et µF ?

1 µF = 1000 nF = 1 000 000 pF. Exemple : 100 nF = 0,1 µF = 100 000 pF. Le code céramique 104 = 10 × 10⁴ pF = 100 nF.

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