In the grinding process, the surface shape of the grinding wheel is directly transferred to the workpiece. Therefore, if the surface shape of the grinding wheel can be determined before actual processing, the ground shape of the workpiece after processing can be predicted. Here, a measured focus position recalculation method applying the point autofocus profiling method is proposed. This study was performed to measure the three-dimensional surface shape of the grinding wheel using the proposed surface shape measuring device. The measurement results of a steel ball, abrasive grains, and a grinding wheel confirmed that all measured objects could be measured with high accuracy.