In the framework of (previously reported) new approach to equation of state based on excluded volume suggested is the most simple and most precise (with regard to known data) equation of state for a system of hard spheres. The equation coefficients are calculated using standard data for the whole density range, in particular classic molecular dynamic modeling data for a system of hard spheres (B. Alder and T. Wainwright's). The procedure can be repeated for any other standard data set.