The Cell Potential Calculator determines the standard cell potential (E°cell) of an electrochemical cell using the formula E°cell = E°(cathode) − E°(anode). This value indicates the overall driving force of an electrochemical reaction, helping to identify whether a cell reaction is spontaneous or not. A positive E°cell value means the reaction proceeds spontaneously in the forward direction, while a negative value indicates a non-spontaneous reaction. This calculator is widely used in electrochemistry to analyze galvanic and voltaic cells, helping students and professionals quickly calculate and understand the energy output of redox systems.