eV to volts calculation formula with elementary charge
V(V) = E(eV) / Q(e)
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 (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,
V = eV / e
volt = electron-volt / elementary charge
For example:
Energy (E) = 650eV
Electric charge (Q) = 20e
Voltage (V) = 650eV / 20e = 32,5V
eV to volts calculation formula with coulombs
V(V) = 1.602176565×10-19 × E(eV) / Q(C)
The voltage V in volts (V) is equal to 1.602176565×10-19, multiplied by the energy E in electron-volts (eV), divided by the electrical charge Q in coulombs (C).
So,
V = 1.602176565×10-19 × eV / C
volt = 1.602176565×10-19 × electron-volt / coulomb
For example:
Energy (E) = 650eV
Electrical charge (Q) = 3C
Voltage (V) = 1.602176565×10-19 × 650eV / 3C = 3,47138×10-17V