Last updated: March 2, 2026 by James Wilson

Capacitance Calculator

Formula

C = ε₀εᵣA/d, Q = CV, E = ½CV², where ε₀ = 8.854×10⁻¹² F/m.

Calculate the capacitance of a parallel plate capacitor using C = epsilon_0 * epsilon_r * A / d. Also computes stored charge and energy when voltage is provided.

Common use cases:

  • Circuit design
  • Energy storage calculations
  • Electronics prototyping

Frequently Asked Questions

JW

James Wilson

Licensed Professional Engineer, PE, MS Civil Engineering

James is a Licensed Professional Engineer with a Master's in Civil Engineering and over 12 years of experience in structural design and construction project management. He specializes in building calculations, material estimation, and physics-based engineering tools.

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