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Capacitance Calculator

⚡ Electricity & magnetism. Use the Capacitance formula to find capacitance, charge, voltage: pick the value you want, type the others, and the answer updates as you go.

C=QVC = \dfrac{Q}{V}
Capacitance0.001 F

Pick the ○ next to the value you want to find, fill in the others, and it solves as you type.

What each letter means

QuantityUnit
CapacitanceF
ChargeC
VoltageV

Worked example

Find the capacitance when Charge = 0.012 C, Voltage = 12 V.

Using C = Q/V: Capacitance = 0.001 F.

Frequently asked questions

What is the formula for Capacitance?

C = Q/V.

What do the letters stand for, and what units are used?

Capacitance in F, Charge in C, Voltage in V.

How do you calculate capacitance?

Put the values into C = Q/V. For example, with Charge = 0.012 C, Voltage = 12 V, capacitance = 0.001 F.

Can I solve for a different value?

Yes. In the calculator above, pick the circle next to any value (capacitance, charge, voltage) and fill in the others: it rearranges the formula for you.

All physics formulas in the Physics Formulas