Capacitance Calculator

If you want to design a capacitor with a parallel plate, you can use our capacitance calculator.

The ability or capacity of an object to store an electrical charge is known as capacitance. However, a capacitance of a capacitor depends upon the dielectric substance or material used among the plates. The SI unit is used for capacitance in farads (F).


Formula of Capacitance Calculator

To instantly find the capacitance of a material to store the charge, you can use our calculator, or to find it manually, you can use the formula listed below:

C = εA/s


C = Capacitance

ε = Dielectric Permittivity

A = Overlap area of the plates 

s = separation distance among plates.


To calculate capacitive reactance, you can use our Capacitive Reactance Calculator.


To understand how to calculate capacitance, let us have an example below:

Suppose a dielectric material is used among the plates, whereas the permittivity value of a material is 8.854 pF/m. The area of the plates is 120 mm², and the distance between the plates is 5mm. Please find out the capacitance of a material to store charge in it.

Given data

Dielectric Permittivity = ε = 8.854 pF/m
Overlap area of the plates = A = 120 mm²
Separation distance among plates = s = 5mm

To Find

capacitance = ?


To find the capacitance, you can use the formula listed below:

C = εA/s

Putting values in the formula:

C = (8.854 pF/m)(120 mm²)/(5mm) = 0.212 pF

How to use the Capacitance Calculator?

The steps to use the capacitance calculator are as follows:

Step 1: Enter the value of dielectric permittivity in the first required input.

Step 2: Enter the value of the overlap area of the plates in the second required input.

Step 3: Enter the value of separation distance among plates in the third required input.

Step 4: The calculator will automatically display an answer on the screen.

Calculator use

To evaluate the capacity of an object to store the charge, you can use our free and online capacitance calculator. This tool will help you find out the amount of energy an object can store and be in power conditioning.