Recently, natural fiber/filler-based composite materials are gaining popularity due to their light weight, ease of procurement and eco-friendliness, and greater modulus and specific strength. The study of mechanical characteristics using Finite Element Methods (FEM) has become progressively essential to quantify the composite’s strength and modulus with different input criteria to avoid experimental complexity. In the present study, the tensile characteristics of the coir filler reinforced composites are evaluated using the Finite Element Method (ANSYS R121) for six different filler weight percentages (0, 2.5, 5, 7.5, 10, and 12.5 wt.%), and the findings are verified with real-time experimental results. The data revealed that the numerical analysis findings followed the same pattern as the observed values at three distinct cross-head speeds. And the composite strength may be calculated immediately by solving the polynomial equations for all filler contents.