Energy to Wavelength Calculator

Convert photon energy to its corresponding wavelength and frequency.

Photon Energy

Energy (eV)

Energy (Joules)

Wave Properties

Enter photon energy

About this calculator

Quick Reference

h6.626 × 10⁻³⁴ J·s

c299,792,458 m/s

EPhoton energy

1 eV1.602 × 10⁻¹⁹ J

Overview

In quantum mechanics, the energy of a photon is directly proportional to its frequency and inversely proportional to its wavelength.

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Pro Tips

Fun Facts

"Visible light has energies between roughly 1.8 eV (red) and 3.1 eV (violet)."
"X-rays and Gamma rays have very high energy and very short wavelengths."
"Radio waves have very low energy and can have wavelengths many kilometers long."

Formula: λ = hc/E