Joule (J) to Electron-volt (eV) Converter

The Conversion Formula

The formula for converting joules (J) to electron-volts (eV) is:

\[E_{eV} = \frac{E_J}{1.602176634 \times 10^{-19}}\]

Where:

• E_eV: Energy in electron-volts (eV)
• E_J: Energy in joules (J)
• 1.602176634 × 10^-19: The value of 1 electron-volt in joules

About Joules and Electron-volts

The joule (J) and electron-volt (eV) are both units of energy, but they are used in different contexts:

• 1 joule is defined as the amount of energy transferred when a force of 1 newton acts over a distance of 1 meter.
• 1 electron-volt is defined as the amount of energy gained (or lost) by a single electron when it is moved across an electric potential difference of 1 volt.
• 1 eV = 1.602176634 × 10^-19 J

Joules are commonly used for macroscopic energies in everyday life and engineering, while electron-volts are typically used in atomic and nuclear physics for measuring the energies of particles and radiation.