fxRender (Formula Render) is an add-in for Microsoft Excel spreadsheets that displays formulas in their standard mathematical form. With CodeCogs' fxRender, the formula appears in an easy-to-read, portable format with just one-click. No longer do you need to rummage around in the formula bar to understand the logic. This add-in is an invaluable aid to student learning, particularly those studying Mathematics, Finance, Engineering and Science.