A total field rating is a score or measure of the intensity of electromagnetic fields in a given environment. This rating can be used to assess potential health risks associated with exposure to electromagnetic fields, particularly from electronic devices and infrastructure. A range of factors can affect the total field rating, including the strength and type of electromagnetic emissions, the distance from the source, and the presence of shielding materials. Total field ratings may be obtained through specialized devices or instruments that are designed to measure electromagnetic fields, and may be used by safety regulators, health professionals, and individuals concerned about their exposure levels.