basic

Electron Kinetic Energy from Accelerating Voltage Calculator

KE = eV — energy gained by a charged particle in an electric field.

Calculates KE = q·V for a particle accelerated through potential difference V. For an electron, q = 1.602×10⁻¹⁹ C. Also computes the electron's de Broglie wavelength at that energy.

Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

V

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

KE = q·V; λ = h / √(2mKE)

In depth

Calculates KE = q·V for a particle accelerated through potential difference V. For an electron, q = 1.602×10⁻¹⁹ C. Also computes the electron's de Broglie wavelength at that energy.