This paper presents a proposal for computing the distance between two Interval Type-2 Fuzzy numbers using its decomposition into a-cuts. This decomposition has been widely used in decision making, computation of a function of fuzzy sets, fuzzy optimization, etc, so the use of a-cuts to compare Interval Type-2 fuzzy numbers arises as an interesting method. In addition, some examples are provided and the comparison of Interval Type-2 fuzzy numbers using their centroids, is discussed.
