Volt to Electron Volt Calculator

Find the energy a charge gains across a voltage, in electron volts.

Energy (eV) 1,000

Energy (J) 0

Formula: E(eV) = charge(e) × voltage(V)

Step-by-step with your numbers:

1. Values used:

2. Voltage = 1,000 V

3. Charge = 1 e

5. Energy = Voltage x Charge = 1,000 x 1 = 1,000eV

6. Energy = 0J

Did we solve your problem today?

An electron volt is the energy one electron gains crossing a one-volt potential difference.

The math behind it

E(eV) = charge (in elementary charges) × voltage. Multiply by 1.602 × 10⁻¹⁹ for joules.

1 electron across 1000 V → 1000 eV = 1.6 × 10⁻¹⁶ J.

Why use eV?

It's a conveniently sized energy unit for atomic and particle physics.