Enter the dielectric constant, the finger width (cm), the finger length (cm), and the number of fingers into the Interdigitated Capacitor Calculator. The calculator will evaluate the Interdigitated Capacitor.

## Interdigitated Capacitor Formula

The following formula is used to calculate the Interdigitated Capacitor.

**C = (E+1) / W * L * (((n-3)*.089)+.10)**

Variables:

- C is the Interdigitated Capacitor (PF/cm)
- E is the dielectric constant
- W is the finger width (cm)
- L is the finger length (cm)
- n is the number of fingers

## How to Calculate Interdigitated Capacitor?

The following steps outline how to calculate the Interdigitated Capacitor.

- First, determine the dielectric constant.
- Next, determine the finger width (cm).
- Next, determine the finger length (cm).
- Next, determine the number of fingers.
- Next, gather the formula from above = C = (E+1) / W * L * ((n-3)*.089)+.10).
- Finally, calculate the Interdigitated Capacitor.
- After inserting the variables and calculating the result, check your answer with the calculator above.

**Example Problem:**

Use the following variables as an example problem to test your knowledge.

dielectric constant = 3

finger width (cm) = 4

finger length (cm) = 5

number of fingers = 10

C = (E+1) / W * L * ((n-3)*.089)+.10) =** ** ?