Brewster's Angle Calculator

Calculate Brewster's Angle (the polarization angle) for light traveling between two different mediums. At this exact angle of incidence, reflected light is perfectly polarized.

Brewster's Angle Calculator

e.g., 1.000 for Air
e.g., 1.500 for Glass, 1.333 for Water

How to Use

  1. 1

    Initial Medium

    Enter the refractive index (n₁) of the medium the light is coming from (e.g., Air = 1.000).

  2. 2

    Second Medium

    Enter the refractive index (n₂) of the medium the light is striking (e.g., Glass = 1.500).

  3. 3

    Calculate

    Click calculate to find the polarization angle in both degrees and radians.

Frequently Asked Questions

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