As kinetics is part of physical chemistry, it naturally involves mathematical treatments. The kinetic traces are modelled by equations and formulae that link the chemical phenomenon taking place in the reaction to observed outputs. A great deal of kinetics is based on analytical chemistry analyses, which equally requires the use of mathematical tools. A few examples of this principle have been discussed in Chap. 2 . The purpose of the present chapter is to give a succinct overview of some methods, procedures and tools that might be considered as the minimum mathematical background necessary for a consistent kinetic investigation.