This work investigates the coefficient of discharge of venturimeter by experimental and computational technique. The effect of flow rate on coefficient of discharge is studied using experimental technique, whereas, the variation of velocity and pressure of flow along the venturimeter is studied computationally using SolidWorks 2016. The experimental setup is developed by installing a venturimeter inside a pipe by cutting small part of the pipe. The accuracy of venturimeter for flow measurement mainly depends upon convergence angle, divergence angle, surface profile, surface finish, throat length, etc. From the literature survey, it has been found that 12°–20° of convergence angle, 4°–7° of divergence angle and parabolic profile is a better choice. In the present work, the venturimeter has been designed in three parts for the ease of manufacturing. Furthermore, all of the three parts, made from PVC material, have been assembled to develop the testing facility for experimentation. Through experimentation, the coefficient of discharge is calculated. It was observed that the coefficient of discharge increases with increase in flow rate. From the computational analysis, it has been found that there is no backflow and eddy formation for the designed venturimeter which validates the accuracy of the design. The experimental and computational results are comparable with an error of less than one percent.