Wavelength to Energy Calculator
Free convert wavelength to photon energy using planck's equation e = hc / λ. Get instant, accurate results with our easy-to-use calculator.
Input Parameters
Results
Enter wavelength to calculate photon energy
Planck's Energy Equation
Energy Formula
E = hc / λ
Where E = energy, h = Planck constant, c = speed of light, λ = wavelength
Constants
- • h = 6.626 × 10⁻³⁴ J·s
- • c = 2.998 × 10⁸ m/s
- • hc = 1240 eV·nm