The method for the transient electromagnetic fields interpolation from the irregular to the uniform array is suggested. It is based on the approximation of the observed data by the field of the current plane disposed at some depth in the homogeneous conductive Earth. The interpolation problem is reduced to solving the Fredholm integral equation of the first kind for unknown distribution of the current in the plane. The discretization of the integral equation results in the systems of the linear equations which are solved by the method of the singular value decomposition. The distribution of the current in the plane is used not only for the interpolation of the observed field but also for the calculation of the linear transformations of the field components. The results of testing of the method on theoretical models are presented.