Engineers, scientists, business analysts, or anyone else who uses tabulated data will find InterpoCalc very useful for quickly performing single- linear, double- linear, and single-parabolic interpolations and extrapolations. It includes visual confirmation graphs (single-linear and single-parabolic) and easy data entry using a custom numerical keypad. Results and input can be e-mailed for later use, sharing, or documentation, in either table format (HTML), or plain text format. Optionally, a .csv file may be attached. This file can then be imported into a spreadsheet.