Reflection Coefficient Calculator

Calculate reflection and transmission coefficients using Fresnel equations

Refractive Index n1 (incident medium):

Refractive Index n2 (transmitted medium):

Angle of Incidence (degrees):

Refraction Angle

0.00°

S-Polarization Reflectance

4.00%

P-Polarization Reflectance

4.00%

Unpolarized Light Reflectance

4.00%

Brewster's Angle

56.31°

rs = (n1·cos(θ1) - n2·cos(θ2)) / (n1·cos(θ1) + n2·cos(θ2))

rp = (n2·cos(θ1) - n1·cos(θ2)) / (n2·cos(θ1) + n1·cos(θ2))

Reflectance: R = r²

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MyCalcBuddy Editorial Team

This page is maintained as an educational calculator reference.

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Formula Source: University Physics

by Young & Freedman

ðŸ”„Last reviewed: May 2026

âœ“Formula checks are based on standard references and internal QA review.