Multi Purpose Excel Sheet

I need a multipurpose excel sheet in which I can have check book reconcilation,Loan Payment Calculator,Body Mass Index and Calorie Calculator,Blood Pressure history with deviation and variance calculations,All the possible conversion calculators(metric,distance etc etc all which one can think of),Right Angle triangle solver (Pythagorus theoram),Spiral Calculator,Rotation of X and Y Cordinates,Cone Fabrication,Circle Segment claculator,Polygon Solver,Values of trignometric Functions

All the above functionalities should be in one Excel worksheet. Through this I will be able to do all sorts of calculation which I need and which I may need in future.