Single-layer inductor calculator
Online single-layer coil calculator β number of turns and inductance from Lundin's formula with Rosa's corrections.
Multilayer inductor calculator
Online multilayer coil calculator β turns, layers, wire length and resistance by Maxwell's method.
Rectangular-former multilayer coil calculator
Online rectangular-former coil calculator β turns and layers from Grover's formulas for straight segments.
PCB coil calculator
Online PCB spiral coil calculator β number of turns, pitch and track width.
Flat spiral Tesla coil calculator
Online flat spiral calculator β turns, outer diameter and wire length by Maxwell's method.
Rectangular loop inductance calculator
Online rectangular loop calculator β inductance of a single-turn loop from Grover's formula.
Triangular loop inductance calculator
Online triangular loop calculator β inductance of an isosceles loop of round wire.
Foil-wound coil calculator
Online foil-wound coil calculator β turns, diameter and foil length via the geometric mean distance.
LC resonance calculator
Online LC circuit calculator β frequency, inductance, capacitance and characteristic impedance in four modes.