Barium titanates are widely used in the electronics industry because of their high dielectric constant and ferroelectric
and piezoelectric properties. These properties are related to the physical properties of the material; thus, the optimization of these properties is crucially important. The aim of the current work is to control the values of the processing parameters to produce the optimum density, porosity, firing shrinkage, and green density of BaTiO3. A genetic algorithm was used to fulfill this aim. The modified pechini method was used to prepare barium titanate powders with five different particle size distributions. Eighty samples were prepared using different processing parameters including the pressing rate, pressing pressure, heating rate, sintering temperature, and soaking time. A genetic algorithm (GA) approach has been applied in order to obtain the optimum processing parameters. The results showed that the best value of the density that can be achieved is 6.02 g/cm3, which is equal to the theoretical density of BaTiO3 using a pressing rate of 3 KN/S, a pressing pressure of around 370–385 Mpa, a sintering temperature of not less than 1400 °C, a soaking time of around 6–8 h, and a heating rate of 2.5 °C/min. The same upper and lower boundary conditions, used to obtain the optimum density, were also employed for the investigation of the porosity, firing shrinkage, and green density. The optimum achieved values were of geometric mean of 6.89%, 3.48 g/cm3, and 17.01% for the porosity, green density, and firing shrinkage, respectively.