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 V in volts (V) is equal to the energy E in electron-volts (eV), divided by the electric charge Q in 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 / coulomb
or
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 = 6.4087×10-17V