This calculation includes tables and calculations for easy option of fits of machine parts and determination of their dimensional tolerances and deviations. Application is developed in MS Excel, is multi-language, supports Imperial and Metric units and solves the following main tasks:- Selection of suitable fits of machine parts according to the international standard ISO 286.- Determination of dimensional tolerances and deviations of machine parts according to the international standard ISO 286.- Selection of preferred fits of machine parts and determination of their dimensional tolerances and deviations according to ANSI B4.1.- Determination of non-prescribed limit deviations of linear and angular dimensions according to ISO 2768.- Automatic design of a fit for the given clearance or fit interference respectively.The data, procedures, algorithms and specialized literature and standards ANSI, ISO, DIN and others were used in the calculations.Used standards: ANSI B4.1, ANSI B4.2, ISO 286, ISO 1829, ISO 2768, EN 20286, JIS B 0401This module is a part of MITCalc - Mechanical and Technical Calculation Package for gear, belt and chain drives, springs, beam, shaft, bolt connection, shaft connection, tolerances and many others.