Capacitance to charge calculator

Charge = capacitance × voltage.

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Capacitance (F)

Voltage (V)

More inputs and assumptions

Input mode

Answer

…

For an ideal constant capacitor, Q = CV; solve for capacitance with C = Q/V using charge and voltage magnitudes.

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Formula and assumptions

An ideal capacitor with constant capacitance is assumed. Values do not establish voltage rating or safe operating conditions.

Automatic precision shows numbers to 12 significant digits. Thousands separators such as 1,000 are accepted; use a dot for decimals.

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Updated 2026-09-26

Using Capacitance to charge calculator

For an ideal constant capacitor, Q = CV; solve for capacitance with C = Q/V using charge and voltage magnitudes.

An ideal capacitor with constant capacitance is assumed. Values do not establish voltage rating or safe operating conditions.

Next: Wattage calculator

A worked example

With capacitance (f) = 0.001, voltage (v) = 12, the charge (c) is 0.012.

Next: Electricity cost calculator

Before you use the result

An ideal capacitor with constant capacitance is assumed. Values do not establish voltage rating or safe operating conditions.

Example results for capacitance (f)

These examples use Voltage (V): 12; Input mode: Find charge from capacitance and voltage. They are reference calculations, not recommended settings.

Capacitance (F)	Charge (C)
0.0005	0.006
0.001	0.012
0.002	0.024

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