PTC Mathcad is the Industry Standard Software for Engineering Calculations

PTC Mathcad combines the ease and familiarity of an engineering notebook with the powerful features of dedicated engineering calculations application. Its document-centric, WYSIWYG (What You See Is What You Get) interface gives you the ability to solve, share, re-use and analyze your calculations without having to learn a new programming language. The result? You can spend more time engineering and less time documenting.