Conventionally, crystal structures are determined by comparing diffracted intensities with kinematic intensities calculated for proposed models. Intensities in low-energy electron diffraction are complicated by multiple scattering and are calculable only in dynamic theories. Here it is demonstrated for both specular and nonspecular beams from Ni(111) that the kinematic intensity can be recovered from LEED data by averaging at constant momentum transfer, thus making the much simpler conventional analysis applicable to surfaces.