Medical physics uses physics knowledge in medicine or healthcare. The question surrounding the methods of measuring temperature is important in medicine. The aim of this article is to explore the possibilities of using Microsoft Excel to study thermometers. The physical concepts and laws related to temperature measurement have been considered. The tools of Microsoft Excel allow us to visualize the results of physics experiments and provide math processing of the data collected in it. Microsoft Excel considerably reduces the time needed to create graphs and calculate physical quantities and allows one to determine physical quantities which cannot be measured directly. As a rule, any measurements have errors. In this case, the technique of evaluating errors using Microsoft Excel was proposed. Some limitations of using Microsoft Excel in the creation of graphs for nonlinear functions have been pointed and suggestions to eliminate them were made.