It is often necessary to determine design parameters from Dynamic Probe Super Heavy n values with correlations based on Standard Penetration Test N values. This is often done by assuming equivalence, as both tests use the same drive energy. In this study, an empirical equivalence was developed in sandy material from different geological depositional and weathering environments. Data collected from previous geotechnical investigations from across southern Africa was analysed. It was apparent that energy losses were greater in the DPSH test than in the SPT, leading to higher resistance values in the former. The SPT is carried out within a borehole whereas the DPSH is continuously percussed into the soil. The dynamic whipping of the DPSH causes soil to fill the small air annulus around the rods exerting a frictional resistance. The different geological settings of the test sites revealed that although various factors impact friction differently, the equivalence varied in a similar manner. Hence an empirical equivalence function is suggested to determine equivalent SPT N values from raw N30SB values.