basic

Capacitance Calculator

Parallel-plate capacitor capacitance.

Compute the capacitance of a parallel-plate capacitor from plate area, plate separation, and the dielectric constant.

Daniel Oh By Daniel Oh
Reviewed by Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

m²
m

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

C = ε₀ · ε_r · A / d, with ε₀ = 8.854 × 10⁻¹² F/m.

In depth

Compute the capacitance of a parallel-plate capacitor from plate area, plate separation, and the dielectric constant.