PressCal is a menu driven software program for pressure calculation and certificate generation using a deadweight tester as the pressure source. This software has been developed as a flexible working tool to make calibrations quicker, easier and more accurate. PressCal allows users to apply all necessary corrections (local gravity, pressure head, temperature, etc.) to enhance the performance of the deadweight tester. Calibration details are then stored and/or automatically inserted into a calibration certificate.