A cubic regression calculator is a computational tool that assists in fitting a cubic function to a set of data points. Cubic functions are equations of the form ax³ + bx² + cx + d, and cubic regression finds the values of a, b, c, and d that best represent the given data. These calculators provide convenience and efficiency in modeling non-linear relationships, curve fitting, and forecasting, making them valuable tools in statistics, data analysis, and machine learning.