Brewster Angle Calculator

Calculate Brewster's angle where p-polarized light has zero reflection

Calculation Mode:

Refractive Index n1 (incident medium):

Refractive Index n2 (transmitted medium):

Brewster Angle

56.3099°

Refracted Angle (at Brewster)

33.6901°

1.0000

1.5000

S-Polarization Reflectance

14.79%

P-Polarization Reflectance

0.00%

Air: 1.0003

Water: 1.333

Crown Glass: 1.52

Flint Glass: 1.62

Diamond: 2.42

Acrylic (PMMA): 1.49

Polycarbonate: 1.58

tan(θB) = n2 / n1

θB = arctan(n2 / n1)

At Brewster's angle, reflected and refracted rays are perpendicular.