The superconducting magnet is a key component in various applications including high‐energy physics, fusion research, magnetohydrodynamics, and electrical rotating machinery. This paper presents the general characteristics of state of the art of superconducting magnets as far as design and performance are concerned. The properties of superconductors are briefly discussed, and the basis for design of stable conductors is set forth. Examples of conductors and magnet systems are given and discussed. The current state of affairs is summarized in three plots showing size versus field achieved, current density in coils as a function of magnetic field, and specific weight versus stored magnetic energy.