Photon Energy and Frequency Calculator
Calculate photon energy, frequency, and wavelength relationships
About this calculator
The Photon Energy and Frequency Calculator is an essential tool for physics students, researchers, and professionals working with electromagnetic radiation. It calculates the fundamental relationships between photon energy, frequency, and wavelength using Planck's equation (E = hf) and the speed of light equation (c = λf). This calculator helps users understand quantum mechanics principles, analyze light properties, and solve problems in atomic physics, spectroscopy, and optical engineering applications.
How to use
Enter any one of the three values: photon energy (in joules or eV), frequency (in Hz), or wavelength (in meters or nanometers). The calculator will automatically compute the remaining two values using fundamental physics constants. Results are displayed instantly with appropriate units for easy interpretation and further calculations.
Frequently asked questions
What is the relationship between photon energy and frequency?
Photon energy is directly proportional to frequency, expressed by Planck's equation E = hf, where h is Planck's constant (6.626 × 10⁻³⁴ J·s).
How does wavelength relate to photon energy?
Wavelength is inversely proportional to photon energy. Shorter wavelengths correspond to higher energy photons, following the relationship E = hc/λ.
What units can I use for calculations?
Energy can be entered in joules or electron volts (eV), frequency in hertz (Hz), and wavelength in meters, nanometers, or angstroms.