Photon wavelength calculator

Input
Output

nm

THz

About this calculator

This calculator computes the wavelength and frequency of a photon from its energy EpE_{p}. The photon frequency is

ν=Eph{\nu} = \dfrac{E_{p}}{h}

and the photon wavelength is

λ=hcEph{\lambda} = \dfrac{hc}{E_{p}}h

where h6.6261034Jsh \approx 6.626\cdot 10^{-34} Js is the Planck constant and cc is the speed of light in vacuum.