Impedance Calculation

With PCBWay impedance calculator, you can calculate the approximate impedance of your PCB / high frequency circuit board. The surface finish is neglected. We recommend the software from Polar Instruments if you want to get exact impedance calculation.
Note: The results are only for approximation and rough estimation, the final values and the corresponding layer construction have to be calculated by us. The stackup information check here.
Instructions: Please select the value to be determined. You can then adjust the other parameters according to your needs.

Surface Microstrip

w

mm cm mil um inch

Track width

t Cu

mm cm mil um inch

Track height

h

mm cm mil um inch

Isolation height

Er

 

Dielectric constant
(FR4 - Standard: 4,3)

Z₀

Ω

Impedance ca.

Edge-Coupled Surface Microstrip

s

mm cm mil um inch

Track space

w

mm cm mil um inch

Track width

t Cu

mm cm mil um inch

Track height

h

mm cm mil um inch

Isolation height

Er

 

Dielectric constant
(FR4 - Standard: 4,3)

Z₀

Ω

Impedance ca.

Z_Diff

Ω

Impedance ca.

Symmetric Stripline

t

mm cm mil um inch

Track space

w

mm cm mil um inch

Track width

h

mm cm mil um inch

Isolation height

Er

 

Dielectric constant
(FR4 - Standard: 4,3)

Z₀

Ω

Impedance ca.