Inductor Calculators
Read color codes, combine series & parallel inductors, find reactance and RL timing, and model real coil geometry — seven complete tools, all live.
01
Inductor Color Code Calculator
Decode 4-band color codes into µH with tolerance.
Live 02Inductor Series Calculator
Total inductance for any number of series inductors.
Live 03Parallel Inductors Calculator
Equivalent inductance for inductors in parallel.
Live 04Inductive Reactance Calculator
XL = 2πfL from frequency and inductance.
Live 05RL Time Constant Calculator
τ = L / R plus 63%, 95% and 99% settling times.
Live 06Solenoid Inductance Calculator
Coil inductance from turns, core size, length and µr.
Live 07Toroid Inductance Calculator
Ring-core inductance from turns, cross-section and mean path.
Live