Unlock the power of our Capacitance Calculator, an essential online tool for engineers, physicists, and students. Easily determine the capacitance of parallel plate capacitors and coaxial circular disk configurations. Understand how material permittivity, plate area, separation distance, and radii impact capacitance. Perfect for circuit design, electromagnetism studies, and quick validations.
Formula:
This calculator determines capacitance for two common configurations:
Parallel Plate Capacitor:
C = (εr · ε0 · A) / d
- C = Capacitance (Farads)
- εr = Relative Permittivity (Dielectric Constant) of the material (unitless)
- ε0 = Permittivity of Free Space (approx. 8.854 × 10-12 F/m)
- A = Area of one plate (m2)
- d = Distance between plates (m)
Coaxial (Cylindrical) Capacitor:
C = (2 · π · εr · ε0 · L) / ln(b/a)
- C = Capacitance (Farads)
- εr = Relative Permittivity (Dielectric Constant) of the material (unitless)
- ε0 = Permittivity of Free Space (approx. 8.854 × 10-12 F/m)
- L = Length of the coaxial cylinders (m)
- a = Inner conductor radius (m)
- b = Outer conductor radius (m)
- ln = Natural logarithm