This program allows the user to take an Excel spreadsheet with any type of calculation data (no matter how complex) and optimize a calculation outcome (e.g. total cost). This is based on the selection of up to five design variables and up to five constraints. The optimization can be performed as a maximization, minimization or the attempt to reach a target value. Applications for this technique lie in every field of work. If the problem can be modeled in Excel, it can be optimized using this program. The main advantage of this program over the Solver, which is supplied with Excel is that it can solve highly nonlinear problems or problems that feature discontinuous functions. Both of these can be problematic for the gradient-based optimization routine that Solver is based on. The software available here is the result of a term project in a class on engineering design optimization.