Capacitance Calculator – Accurate Capacitance Measurements Online

Use the charge-and-voltage mode to calculate capacitance with C = Q ÷ V, or use the parallel-plate mode to estimate capacitance from plate area, spacing, and relative permittivity.

The result is shown in common capacitance units, with an energy estimate for the entered voltage. The parallel-plate calculation assumes an idealized plate geometry; real components can differ because of fringing, tolerances, and materials.