摘要：The design process for integrated inductors generally requires a geometry optimization step. During this step, many geometries must be simulated and fast and accurate formulae are therefore required for the computation of self and mutual inductances of turns. This paper especially deals with numerical evaluation of the mutual inductance of two coaxial circular wire loops. Several computation methods are presented and compared. Finally, an expression is built-up and proven to be very few computing time consuming and 1‰ accurate for any kind of geometry. The application of this expression to integrated inductive components modelization is recalled to mind, however, this work gives a general and fast computable solution to the electromagnetic problem.