Reactance Calculator
Calculate the inductive reactance or capacitive reactance of a component with the Reactance Calculator and learn on the go with the integrated live example
The Reactance Calculator will calculate the inductive reactance and the capacitive reactance of a coil or capacitor, and display a live example of how to perform the calculation.
The formula for calculating the inductive reactance is:
Where
XL = Inductive reactance in ohms
f = Frequency in cycles per second or Hertz (Hz)
L = Inductance in Henrys
The formula for calculating the capacitive reactance is:
Where
XC = Capacitive reactance in ohms
f = Frequency in cycles per second or Hertz (Hz)
C = Capacitance in Farads
Example 1: Find the inductive reactance of a coil that has an inductance of 320 µH (0.00032 Henry) when the frequency is 3333 kc (3333000 cycles/sec)
Example 2: Find the capacitive reactance of a coil that has a capacitance of 1300 pF (0.0000000013 Farad) when the frequency is 360 kc (360000 cycles/sec)
Using the Reactance Calculator
Select whether to calculate the inductive reactance or the capacitive reactance
Frequency: You must enter a frequency for the calculator to work
Calculating inductive reactance: Enter the inductance
Calculating capacitive reactance: Enter the capacitance
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 reactance using the figures that you enter
Reference: ARRL – The Radio Amateur’s Handbook