Capacitor Size

Calculate physical dimensions required for a specific capacitance or vice-versa.

Physical Parameters

Dielectric Material

Rel. Permittivity (εr)

Plate Area (A) (cm²)

Distance (d) (mm)

Calculation Results

Enter dimensions to calculate capacitance

About this calculator

Quick Reference

ε₀Vacuum Permittivity (8.854e-12 F/m)

εᵣDielectric Constant

APlate Overlap Area

dPlate Spacing (Gap)

Overview

A capacitor's storage capacity is determined by geometry and the insulating material (dielectric) between its plates.

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Pro Tips

Fun Facts

"The 'supercapacitor' uses an electric double-layer to achieve massive capacitance in small sizes."
"The Farad is named after Michael Faraday, who made major contributions to electromagnetism."
"If you had a 1 Farad parallel-plate capacitor with a 1mm gap in air, its plates would need to be about 10km² in area."

Formula: C = (ε₀ × εᵣ × A) / d