Physics

Photon Energy Calculator

Find a photon's energy from its frequency.

Calculated Output

Energy (J) 0

Energy (eV) 2.068

Formula: E = h · f, h = 6.626×10⁻³⁴

Step-by-Step Breakdown

1. Values used:

2. Frequency = 500,000,000,000,000 Hz

4. Energy = 0J

5. Energy = 2.068eV

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The math behind it

E = Planck's constant × frequency. Divide joules by 1.602 × 10⁻¹⁹ for electron-volts.

5 × 10¹⁴ Hz (green light) → 2.07 eV.

From wavelength?

E = hc ÷ wavelength.