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Both calculators run independently — change the inputs on either side to compare results.
Quantum
Photon Energy Calculator
Compute the energy of a single photon from its wavelength using E = hc/λ, the Planck-Einstein relation. Returns energy in joules; convert to electron-volts by dividing by 1.602 × 10⁻¹⁹.
Fill in the required fields to see your result.
Quantum
Hydrogen Atom Energy Levels Calculator
Computes the energy of any electron shell in a hydrogen atom using Bohr's model, given the principal quantum number n. Useful for understanding atomic spectra, photon emission energies, and introductory quantum chemistry.
Fill in the required fields to see your result.
Key differences
| Photon Energy Calculator | Hydrogen Atom Energy Levels Calculator | |
|---|---|---|
| Category | Quantum | Quantum |
| Inputs required | 1 | 1 |
| Result | Photon Energy (J) | Energy Level (J) |
| What it does | Compute the energy of a single photon from its wavelength using E = hc/λ, the Planck-Einstein relation. Returns energy in joules; convert to electron-volts by dividing by 1.602 × 10⁻¹⁹. | Computes the energy of any electron shell in a hydrogen atom using Bohr's model, given the principal quantum number n. Useful for understanding atomic spectra, photon emission energies, and introductory quantum chemistry. |