Interpolation Calculator

Interpolate using linear, polynomial and cubic spline interpolation. Each type is plottet on a graph to make it easy to select the most appropiate for the given case. The equation for the interpolation curves is given for linear and the polynomial interpolation.

Each x shall be unique and rising order

Atleast two points are needed for linear interpolation, atleast three (3) points is needed for polynomial interpolation and cubic spline interpolation requires atleast four (4) points.