Impedance Matching Calculator

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Calculates the component values (e.g., in L-networks) needed to match impedances for maximum power transfer.

How To Use

How to use this calculator

Start with your values, or try a preset.

Step 1

Enter Source Impedance - Real Part (Ohms), Source Impedance - Imaginary Part (Ohms), Load Impedance - Real Part (Ohms), Load Impedance - Imaginary Part (Ohms), and Operating Frequency (MHz) in the units shown.

Step 2

Read Shunt Inductor Reactance (Ohms), Shunt Capacitor Reactance (Ohms), Series Inductor Reactance (Ohms), Series Capacitor Reactance (Ohms), Load Impedance Magnitude (Ohms), Source Impedance Magnitude (Ohms), Shunt Inductance (nH), Shunt Capacitance (pF), Series Inductance (nH), and Series Capacitance (pF) in the results panel. Results update as you change the inputs.

Step 3

Choose a preset to load an example, then adjust the values for your situation.

Worked Examples

Example calculations

See the inputs and their calculated results.

50 to 75 Ohms, 100 MHz

Source Impedance - Real Part (Ohms): 50; Source Impedance - Imaginary Part (Ohms): 0; Load Impedance - Real Part (Ohms): 75; Load Impedance - Imaginary Part (Ohms): 0; Operating Frequency (MHz): 100

Shunt Inductor Reactance (Ohms): 61.23724357; Shunt Capacitor Reactance (Ohms): -61.23724357; Series Inductor Reactance (Ohms): -61.23724357; Series Capacitor Reactance (Ohms): 61.23724357; Load Impedance Magnitude (Ohms): 75; Source Impedance Magnitude (Ohms): 50; Shunt Inductance (nH): 97.46 nH; Shunt Capacitance (pF): 0.03 pF; Series Inductance (nH): -97.46 nH; Series Capacitance (pF): 0.03 pF

50 to 25 Ohms, 100 MHz

Source Impedance - Real Part (Ohms): 50; Source Impedance - Imaginary Part (Ohms): 0; Load Impedance - Real Part (Ohms): 25; Load Impedance - Imaginary Part (Ohms): 0; Operating Frequency (MHz): 100

Shunt Inductor Reactance (Ohms): -35.35533906; Shunt Capacitor Reactance (Ohms): 35.35533906; Series Inductor Reactance (Ohms): 35.35533906; Series Capacitor Reactance (Ohms): -35.35533906; Load Impedance Magnitude (Ohms): 25; Source Impedance Magnitude (Ohms): 50; Shunt Inductance (nH): -56.27 nH; Shunt Capacitance (pF): 0.05 pF; Series Inductance (nH): 56.27 nH; Series Capacitance (pF): 0.05 pF

75 to 50 Ohms, 50 MHz

Source Impedance - Real Part (Ohms): 75; Source Impedance - Imaginary Part (Ohms): 0; Load Impedance - Real Part (Ohms): 50; Load Impedance - Imaginary Part (Ohms): 0; Operating Frequency (MHz): 50

Shunt Inductor Reactance (Ohms): -61.23724357; Shunt Capacitor Reactance (Ohms): 61.23724357; Series Inductor Reactance (Ohms): 61.23724357; Series Capacitor Reactance (Ohms): -61.23724357; Load Impedance Magnitude (Ohms): 50; Source Impedance Magnitude (Ohms): 75; Shunt Inductance (nH): -194.92 nH; Shunt Capacitance (pF): 0.05 pF; Series Inductance (nH): 194.92 nH; Series Capacitance (pF): 0.05 pF

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