A probabilistic method to generate a number of individual daily life-schedules was established, which seems to be useful in a set of calculations of various energy peak loads, including not only cooling or heating requirements but also domestic hot water even electric power and natural gas demand. Authors* previous work was a particular method that was only applicable to a dataset of Working Male on Weekdays. The method this time, however, can be applied to all the dataset. That is why it is called as universal. The accuracy of the proposed method was also identified.