The objective is to provide a golf equipment fitting system and a golf equipment fitting program capable of providing accurate calculation results even when specifications that affect swing time are changed, and of outputting simulation results in a short period of time. The golf equipment fitting system and the golf equipment fitting program calculate a swing response surface and a time response surface using a response surface methodology based on an obtained swing data. Also, the golf equipment fitting system and the golf equipment fitting program calculate the swing data of a golf club that is not used for measurement from the swing response surface and the time response surface, simulate a golf swing based on the calculated swing data, and output the results of simulations.
