RL Circuit Calculator
Time constant and cutoff frequency of a resistor–inductor circuit.
How to use the RL Circuit Calculator
- Enter or select: Resistance R, Inductance L.
- The results (Time constant τ = L/R, Cutoff frequency) are calculated instantly as you type.
- Use “Copy link” to share the calculation with the same input values.
Formula
- τ = L/R
- f_c = R/(2πL)