1) The study examines the effect of age on ultrasonic pulse velocity (UPV) in concrete and mortar specimens through direct, indirect, and semi-direct testing methods at 7, 28, and 56 days. 2) UPV was found to increase more rapidly between 7 and 28 days than 28 to 56 days. Mortar specimens showed a greater increase in UPV with age than concrete. 3) UPV results varied between the top and bottom surfaces of semi-direct tested concrete beams, with the bottom surface yielding higher velocities.