De Broglie Wavelength Calculator – Mass, Velocity & Wavelength

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Easily calculate the de Broglie wavelength, momentum, mass, or velocity of any moving object. Features interactive examples for electrons, neutrons, and macroscopic objects!

De Broglie Wavelength Calculator

Particle Properties
Wave Property

Check our examples:

  • Example 1 – Electron moving at 1,000 km/s
  • Example 2 – Thermal neutron (2,200 m/s)
  • Example 3 – A baseball (0.145 kg) thrown at 40 m/s
Note: For macroscopic objects (like a baseball), the wavelength is so incredibly small that wave properties are unobservable. Scientific notation (e.g., 1e-34) is recommended.
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