Individuals with diabetic neuropathic foot need custom-made insoles specifically intended to alleviate excessive pressure on the plantar area in order to avoid issues. The utilization of three-dimensional (3D) printing technology enables the production of more precise, personalized, and efficient. Therefore, this study aims to find out the geometric shape of the insole is designed to produce an insole that is both sufficiently flexible and durable to withstand the static load from the patient’s body weight in static with uniform pressure. The process of creating 3D-printed insoles geometry involves some steps, including 3D scanning of the foot and 3D modeling. Then the 3D model insole was simulated statically uniform pressures using FEA software PrePoMax CalculiX version 2.1.4. The simulation resulted in a maximum of 35.29 mm deformation in model A with no arch support underneath the arch and 6.086 mm on the lateral trimline of the heel. Von Misses stress were 1.881 MPa and 1.237 MPa, respectively. Two geometry model insoles for diabetic were developed. The design with full support underneath the arch shows better resistance to deformation.