The Standard Hydrogen Electrode (SHE) consists of a platinum electrode in contact with a hydrogen gas atmosphere. The SHE is used as a reference electrode in many electrochemical measurements, and it is important to note that it has a defined electrode potential of 0 V. Synonyms for the SHE include hydrogen electrode, normal hydrogen electrode, reference hydrogen electrode or simply the standard electrode. Regardless of the name, the SHE is a pivotal tool for the measurement of electrode potentials, and its use allows for the calculation of thermodynamic properties such as the Gibbs free energy of a reaction. Therefore, a solid understanding of this electrode and its synonyms is essential for researchers in electrochemistry and related fields.