Impedance Matching Calculator

Interactive Smith-chart calculator for matching a complex load to a complex source impedance.

System and load

Reference impedance Z₀ (Ω)

Frequency (MHz)

Load resistance R_L (Ω)

Load reactance X_L (Ω)

Source resistance R_S (Ω)

Source reactance X_S (Ω)

Method

Topology

● Load● Element 1● Final● Source target

Mouse wheel over chart: zoom. Left-drag: pan. Double-click: reset. Move the pointer over the chart for the actual impedance.

Element 1

Element 2

The diagram follows the selected matching method and the current slider values.

Load impedance

After element 1

Matched impedance

Element 1

Element 2

Initial VSWR

Final VSWR