The service oriented architecture supports reusable components. Component reusability is one of the important features while designing Web services for reuse. The reusability is an ideal and key factor to improve the quality and production rate of software. It becomes very helpful for quality assurance, if such quality parameters can be quantified. Non-functional quality parameters like reusability are not easy to measure and quantify. This paper attempts to quantify reusability using fuzzy multi-criteria approach. This approach is considered due to the unpredictable nature of reusability attributes.