ONE FORMULA, ONE ANSWER
Good Conductor Skin Depth Calculator
Calculate the electromagnetic amplitude 1/e depth in the good-conductor approximation. 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
Skin depth δ
Enter values and select Calculate.
δ = √(1/(πf μ₀μ_r σ))
Assumptions
Required: f,μ_r,σ>0, linear properties at the selected frequency, and the good-conductor approximation. The depth is for amplitude decay to 1/e. Displacement current, nonlinear magnetism, finite thickness and roughness are excluded.
Displayed values are floating-point approximations. Design safety factors and unprovided error contributions 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.