Parallel Plate Capacitor Capacitance Calculator

This calculator computes the capacitance between two parallel plates. The first calculator is metric, whereas the second is inches. Small valued capacitors can be etched into a PCB for RF applications, but under most circumstances it is more cost effective to use discrete capacitors. Various dielectric constants are listed below.

Metric Units

Equations

C= K*Eo*A/D, where Eo= 8.854x10-12

where:

K is the dielectric constant of the material,
A is the overlapping surface area of the plates in m²,
d is the distance between the plates in m, and
C is capacitance

Imperial Units

Equations

C= K*0.2248*A/d

Common Dielectric Constants