Mass of electron: Learn about the electron mass

Learn about the electron mass , its value in different units, its dimensional formula, and its significance in physics. Find out how the electron mass affects atomic structure, quantum mechanics, relativity, and various practical applications. Learn about the electron mass , a fundamental constant of physics that has a value of about 9.109 × 10−31 kg or 5.486 × 10−4 Da. Find out how it is measured, calculated and related to other physical constants. In physics, the electron mass or mass of an electron or electron rest mass is one of the fundamental constants and is defined as the mass of a stationary electron and denoted by m e.