Geometric design and strength check of bevel gear with with straight, helical and curved toothing. Application is developed in MS Excel, is multi-language and supports Imperial and Metric units and solves the following main tasks: - Calculation of straight, helical and curved toothing. - Automatic design of a transmission with the minimum number of input requirements. - Design for entered coefficients of safety (static, dynamic). - Calculation of complete geometric parameters (including corrected toothing). - Calculation of strength parameters, safety check. - Supplementary calculations (calculation of parameters of the existing gear, temperature rise, design of shafts) - Optimization of parameters (dimensions, weight, volume, transmission ratio) - Support of 2D CAD (AutoCAD, AutoCAD LT, IntelliCAD, Ashlar Graphite, TurboCAD) and 3D CAD in full calculation package (Autodesk Inventor, SolidWorks, SolidEdge, Pro/E). The calculations use procedures, algorithms and data from standards ANSI, ISO, DIN, BS and specialized literature. Used standards: DIN 3971, DIN 3991 Kegelradern 1-4, ISO 6336 1-3, DIN 3965 Toleranzen fьr Kegelradverzahnungen 1-4, ISO 1328, DIN 3990, ANSI B6.1-1968, AGMA 2001-C95, AGMA 908-B89/95, AGMA 2003-A86/88, AGMA 2005-B88 and others.This module is a part of MITCalc - Mechanical and Technical Calculation Package for gear, belt and chain drives, bearings, springs, beam, shaft, bolt connection, shaft connection, tolerances and many others