## How to convert electron-volts to volts

How to convert energy in electron-volts (eV) to electrical voltage in volts (V).

You can calculate volts from electron-volts and elementary charge or coulombs, but you can't convert electron-volts to volts since electron-volt and volt units represent different quantities.

## eV to volts calculation with elementary charge

The voltage

Vin volts (V) is equal to the energy E in electron-volts (eV), divided by the electric chargeQin elementary charge or proton/electron charge (e):

V_{(V)}=E_{(eV)}/Q_{(e)}The elementary charge is the electric charge of 1 electron with the e symbol.

So

volt = electronvolt / elementary charge

or

V = eV / e

## Example

What is the voltage supply in volts of an electrical circuit with energy consumption of 800 electron-volts and charge flow of 40 electron charges?

V= 800eV / 40e = 20V## eV to volts to calculation with coulombs

The voltage V in volts (V) is equal to 1.602176565×10

^{-19}times the energy E in electron-volts (eV), divided by the electrical charge Q in coulombs (C):

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

volt = 1.602176565×10

^{-19}× electronvolt / coulombor

V = 1.602176565×10

^{-19}× eV / C## Example

What is the voltage supply in volts of an electrical circuit with energy consumption of 800 electron-volts and charge flow of 2 coulombs?

V= 1.602176565×10^{-19}× 800eV / 2C = 6.4087×10^{-17}V

## See also