Linear interpolation and extrapolation from a user-defined data table. Enter X/Y pairs from a datasheet or test results, query any X value, and read the result with the full equation — visualised on a live graph.
This tool performs piecewise linear interpolation — a straight line is drawn between each adjacent pair of data points. Extrapolation extends the slope of the outermost segment beyond the data range and should be used with caution. For non-linear behaviour (viscosity, material properties under stress, etc.) verify that linear interpolation is appropriate for the interval in question, or increase data density in the region of interest.