Pile load tests are essential to verify a pile’s initial design by obtaining an estimate of the ultimate axial load, Qu. A widely used method to interpret pile load tests is using Mazurkiewicz’s method. The procedure restricted a 45° angle connecting each load line intersection but allowed freedom to choose the settlement interval for the final section of the curve. A parametric study was conducted using field data from a project in Bandung County to see the extent of each parameter’s influence to Qu estimation. It was discovered that the load line intersection angle does not have to be 45° for Qu estimation. Any angle would yield identical Qu provided that the angle does not coincide with the axes (i.e., 0°, 90°, 180°, and 270°) and the same angle was used throughout the interpretation. On the other hand, settlement interval slightly influences the estimation, leading to a reasonable <5% change.