This paper focuses on finding the weight criteria to determine the work volume of a 3-PRS (Prismatic-Revolute-Spherical) parallel manipulator (PM) using Fuzzy Logic approach. The Analytic Hierarchy Process (AHP), being an uncomplicated Fuzzy logic techniquebut an authoritative decision-making toolthat has been applied to solve different manufacturing problems till now. In this work, the AHP has functioned to calculate the weight criteria to find work volume of the Parallel Manipulator. The results of this research may be utilized to improve the architecture of 3 degrees of freedom (DOF) parallel manipulator. © 2014 The Authors.