Snell's Law Calculator
Free calculate angle of refraction, critical angle, and total internal reflection using n₁sin(θ₁) = n₂sin(θ₂).
Input Parameters
degrees
Results
Enter parameters to calculate refraction
Snell's Law Formula
Snell's Law
n₁sin(θ₁) = n₂sin(θ₂)
Where:
- • n₁, n₂ = refractive indices
- • θ₁ = incident angle
- • θ₂ = refracted angle
Critical Angle
θ_c = arcsin(n₂/n₁)
For total internal reflection (n₁ > n₂)