Sandstone was widely used in Cambodian ancient structures such as temples, bridges, and statues. However, studies on its mechanical properties including tensile strength, Young’s modulus, and Poisson’s ratio remain insufficiently studied. This study aims to determine the mechanical properties of Cambodian sandstone. Brazilian tests coupled with the Digital Image Correlation (DIC) method, were conducted on seven samples of sandstone to find the tensile strength and analyze the displacement fields of stone samples during applied loading. Furthermore, the strain obtained from DIC was used to determine Poisson’s ratio and Young’s modulus. The results showed that the tensile strength, Young’s modulus, and Poisson’s ratio have values of 21.67 MPa, 34.82 GPa, and 0.27 respectively. On the other hand, the fracture path of the samples could not be observed properly because the specimens failed abruptly after reaching peak load. However, the failure patterns of the Brazilian samples were in the center of the specimen which agreed with the literature review. To compare the displacement fields obtained from DIC, the finite element method (FEM) was carried out by using Abaqus software. Moreover, the Semi-Circular Bending (SCB) test was performed to determine fracture toughness using two different notch lengths. In conclusion, tensile strength and fracture toughness can be reliably measured, whereas the determination of Young’s modulus and Poisson’s ratio using DIC still requires further investigation to improve its accuracy.