Engineering economics is a branch of economics that provides analytical methods for estimating costs and determining the value of systems, capital, products, and services. \ NTo perform more calculations in engineering economics and determine values at different times of the coefficient A special conversion is used, which calculates the numerical value of these coefficients is a bit time consuming and slows down the calculations. On the other hand, this problem has been solved to some extent by preparing a table called the table of conversion coefficients of engineering economics, but in this software We have tried to make the amount of these coefficients and the calculation of financial values easier for you and to have easier access to them.