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Both calculators run independently — change the inputs on either side to compare results.

Photon Energy and Frequency Calculator

Calculates photon energy from either its wavelength or frequency using Planck's relation. Ideal for optics, spectroscopy, and quantum physics problems involving electromagnetic radiation.

Input Parameter

Input Value (variable)

Fill in the required fields to see your result.

Quantum

Fermi Energy and Temperature Calculator

Computes the Fermi energy and Fermi temperature of a free or effective-mass electron gas from carrier density, dimensionality, and effective mass. Useful in semiconductor physics, metal band theory, and nanostructure design.

Electron Density (electrons/m³)

System Dimension

Effective Mass Ratio (m*/me)

Fill in the required fields to see your result.

Key differences

	Photon Energy and Frequency Calculator	Fermi Energy and Temperature Calculator
Category	Quantum	Quantum
Inputs required	2	3
Result	Photon Energy (J)	Fermi Energy (J)
What it does	Calculates photon energy from either its wavelength or frequency using Planck's relation. Ideal for optics, spectroscopy, and quantum physics problems involving electromagnetic radiation.	Computes the Fermi energy and Fermi temperature of a free or effective-mass electron gas from carrier density, dimensionality, and effective mass. Useful in semiconductor physics, metal band theory, and nanostructure design.