The aim of this paper is to construct a software containing a complete design procedure and detailed drawing for bevel gears (straight, skew, zerol and spiral). This software can be executed on all the IBM personal computers XT/AT or compatibles. The main elements of the design in this program are: input data, type of bevel gear, type and shape of gear tooth system (ISO, US, BS, DIN and Gleason), module, virtual number of teeth, minimum number of teeth to avoid Interference, tooth profile modification, shaft angle, contact ratio, face width, spiral angle, force analysis, sliding velocity and efficiency, material, equations for bending strength (Modified Lewis, Buckingham, AGMA and Gleason) and surface durability, also load carrying capacity for bending strength and surface durability using ISO, AGMA, Gleason and 8S equations with constant or variable tooth load. Many equations and practical formulae are selected for making the gear construction (integar gear, solid gear, gear with web, gear with web and holes, gear with arms and composite gear). With running the software, full specifications, geometry, kinematics. loads, stresses and detailed drawing of the gears are obtained according to the input data. Different examples are selected 10 show the variety of the output data and the strength of the software. Also these runs show the save in time and accuracy of the results.