CALPHAD (CALculation of PHAse Diagrams) is a method to create reliable thermodynamic databases that can be an effective tool when searching for single phase HEAs. However, this method can be limited since it needs to extrapolate from known binary or ternary phase diagrams. This method also does not take into account the process of material synthesis and can only predict equilibrium phases. The phase diagrams of HEAs can be explored experimentally via High throughput experimentation (HTE). This method rapidly produces hundreds of samples allowing the researcher to explore a region of composition in one step and thus can used to quickly map out the phase diagram of the HEA. Another way to predict the phase of the HEA is via enthalpy concentration. This method accounts for specific combinations of single phase HEA and rejects similar combinations that have been shown not to be single phase. This model uses first principle high throughput density functional theory to calculation the enthalpies, thus requiring no experiment input, and it has shown excellent agreement with reported experimental results.