ONE FORMULA, ONE ANSWER
Parallel Plate Capacitance Calculator
Check ideal capacitance for a sensor or a dielectric experiment. Choose input units and calculate one value within the stated conditions.
Inputs
Calculations run in this browser. Scientific notation such as 1.2e-3 is supported. Do not group thousands.
Result
Parallel plate capacitance C
Enter values and select Calculate.
C = ε₀ ε_r A / d
Assumptions
Use ε_r,A,d>0. A uniform dielectric fills the gap, and the gap is small relative to the plate dimensions so fringing is negligible. Choose permittivity for the relevant frequency and temperature.
Displayed values are floating-point approximations. Measurement uncertainty and design safety factors are not calculated.
Formula references and credits
NaNa Lab created the code, descriptions, icons and preview images. Text, figures and code from the linked references have not been reproduced.
Physical constants: NIST / CODATA 2022. The values of μ₀ and ε₀ are measured recommendations, not exact defining constants. Values and precision notes are in the source record.
This site includes Google advertising and analytics, and Cloudflare analytics.