Inductive Reactance and Admittance Calculator

The inductive calculator allows you to determine the reactance and admittance of an inductance as a function of the applied frequency.
This tool is useful for engineers and technicians working on the design of RF or electronic circuits.

Enter F and L to calculate for XL and BL

Formula used

X L = 2 × π × F × L
B L = 1000 / X L

Or :
F = signal frequency (Hz, kHz, MHz, GHz)
L = inductance (H, mH, µH, nH)
X L = inductive reactance (Ω)
B L = inductive admittance (m-mhos)

Explanation

The inductive reactance X L increases proportionally with frequency and inductance.
Inductive admittance B L is the reciprocal of reactance and expresses the ease with which current passes through the inductance.
Larger inductance or higher frequency leads to larger reactance and therefore lower admittance.

Calculation example

For an inductance of 100 nH and a frequency of 1 GHz :
X L = 2 × π × 1×10⁹ × 100×10⁻⁹ ≈ 628.32 Ω
B L = 1000 / 628.32 ≈ 1.591 m-mhos

Benefits and Use

  • Allows you to quickly calculate reactance and admittance for RF circuits.
  • Useful for the design and analysis of filters, antennas and inductive components.
  • Helps optimize circuit performance by adjusting inductance and frequency.
  • Practical tool for students and professionals working on electronics and RF systems.