# Skin Effect Calculator

Calculate skin depth at a given frequency with the Skin Effect Calculator and learn on the go with the integrated live example

As frequency increases, the current carried by a conductor goes towards the outer surface of the conductor, and the copper in the middle becomes inactive. The depth of the current, or the active conduction depth, is called the skin depth.

The formula to calculate the skin depth is:

Where

δ = Skin depth in metres

ρ = The resistivity of the conductor (copper = 1.678 × 10^{-8} ohms·metre at 20°C)

μ = The permeability of the conductor = μ_{r}μ_{0}

μ_{r} = The relative permeability of the conductor (copper = 0.999994)

μ_{0} = The permeability of free space = 4π × 10^{-7} Henries/metre

ω = Angular frequency = 2π*f**f* = Frequency in cycles/sec

**Example:** Find the skin depth when the frequency is 1330 kc

### Using the Skin Effect Calculator

**Frequency:** The only value you need to enter to calculate skin depth is the frequency

**Selecting units:** You can choose your preferred units of measurement through selecting the units cells and clicking the downwards pointing arrow to display a list of available options

**Learn As You Go:** This feature displays a live example of how to calculate skin depth using the figures that you enter

*Reference: Wikipedia*