LED Spectral Calculator

Calculate emission wavelength, spectral width, and pump absorption overlap for LED sources.

Band Gap → Wavelength
Emission Wavelength
Peak wavelength (λ)
469.7nm
Photon energy
2.640eV
Photon energy
4.230e-19J
Frequency
638.3THz
Identification
Color / Region
Blue
Material system
InGaN / GaN
Abridged Optics — LED Spectral Calculator v1.0Uses 2019 SI exact values for h, c, k_B.

All information, equations, and calculations have been compiled and verified to the best of our ability. For mission-critical applications, we recommend independent verification of all values. If you find an error, please let us know.