basic

Brewster's Angle Calculator

θ_B = atan(n₂ / n₁) — angle of zero-reflection p-polarization.

Compute Brewster's angle θ_B = atan(n₂ / n₁) — the incidence angle at which p-polarized light is fully transmitted (zero reflection) at the boundary of two media of refractive indices n₁ and n₂. Also reports the corresponding refraction angle.

Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

θ_B = atan(n₂ / n₁)

In depth

Compute Brewster's angle θ_B = atan(n₂ / n₁) — the incidence angle at which p-polarized light is fully transmitted (zero reflection) at the boundary of two media of refractive indices n₁ and n₂. Also reports the corresponding refraction angle.