Calculate the wavelength of light with our online tool.
Calculate from Frequency: λ = c/f
Hz
Scientific notation:
m/s
Wavelength
Wavelength (nm)
Light Type
Calculate from Energy: λ = hc/E
J
Scientific notation:
eV
Wavelength
Wavelength (nm)
Frequency
Formulas
λ = c/f (wavelength from frequency)
λ = hc/E (wavelength from energy)
E = hf (energy-frequency relation)
c = 299,792,458 m/s, h = 6.626×10⁻³⁴ J·s, 1 eV = 1.602×10⁻¹⁹ J
About This Tool
The wavelength calculator helps you determine the wavelength of light based on its frequency and the speed of light. It's useful for physics students, scientists, and anyone working with optics and electromagnetic waves.