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Integrated Spiral Inductor Calculator

Input Geometric Parameters

No. turns, n =    Turn spacing, s = um
Turn width, w = um Outer diameter, dout = um


  Square Hexagonal Octagonal
Modified Wheeler nH nH nH
Current Sheet nH nH nH
Monomial Fit nH nH nH

S.S. Mohan, M. Hershenson, S.P. Boyd and T.H. Lee, "Simple Accurate Expressions for Planar Spiral Inductances," IEEE Journal of Solid-State Circuits, Oct. 1999, pp. 1419-24.