Enter the wavelength and frequency of a photon into the calculator. The calculator will display the total energy of that photon.

## Energy of a Photon Formula

The following equation can be used to calculate the energy of a particular photon.

E = h * c / λ = h * f

- E is the energy of a photon
- h is the Planck constant, (6.6261 × 10
^{−34}J*s) - c is the speed of light, (299 792 458 m / s)
- λ is the wavelength of a photon,
- f is the frequency of a photon.

## Photon Energy Definition

Photon energy is defined as the total kinetic energy contained within one photon of light.

## How to calculate photon energy?

How to calculate photon energy

**First, determine the wavelength**This will be the wavelength the the path the photon is traveling.

**Next, determine the frequency of the photon**This will be the frequency of the wavelength from step 1.

**Calculate**Calculate the energy of the photon using the wavelength and frequency along with the Planck constant (6.6261 × 10

^{−34}J*s) and speed of light. (299 792 458 m / s). Just plug all 4 pieces of information into the formula above.

## FAQ

**What is photon energy?**

Photon Energy is the total kinetic energy a particular photon has. Energy, typically is measured in joules on smaller scales, but photons are so minuscule that they use units designed for even smaller scales like the electrovolt.

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