## Volts to eV calculation formula with elementary charge

E_{(eV)} = V_{(V)} × Q_{(e)}

The energy **E** in electron-volts (eV) is equal to the voltage **V** in volts (V), multiplied by the electric charge **Q** in elementary charge (e).

The elementary charge (symbol e) is the electric charge carried by a single proton, or equivalently, the magnitude of the electric charge carried by a single electron, which has charge −e.

So,

*eV = V × e**electronvolt = volt × elementary charge*

**For example:**

*Voltage (V) = 25V**Electric charge (Q) = 30e*

*Energy (E) = 25V x 30e = 750eV*

## Volts to eV calculation formula with coulombs

E_{(eV)} = V_{(V)} × Q_{(C)} / 1.602176565×10^{-19}

The energy **E** in electron-volts (eV) is equal to the voltage **V** in volts (V), multiplied by the electrical charge **Q** in coulombs (C), divided by 1.602176565×10^{-19}.

So,

*electronvolt = volt × coulomb / 1.602176565×10 ^{-19}*

*eV = V × C / 1.602176565×10*

^{-19}**For example:**

*Voltage (V) = 25V**Electrical charge (Q) = 3C*

*Energy (E) = 25V x 3C / 1.602176565×10 ^{-19} = 4,68113 × 10^{20}eV*