The presented paper deals with the design proposal and application of the program for calculation and check of chain gears. The computing program has been created as a spreadsheet in the working environment of the Microsoft Office program by the Excel application through defined sequences of the individual commands. The program serves for the design proposal of a chain drive by means of inserted databases, graphs and tables. In the process of designing and checking the input values are entered such as performance, rotations, and number of wheels. Through calculation, the software generates the speed of a chain, circumferential speed, tensile force, number of chain links, axial distance, etc. At the same time, the paper compares generated parameters with the manual calculation of the chain gear.