Angle of Refraction Calculator
Free calculate the angle of refraction using snell's law from incident angle and refractive indices of two media.
Input Parameters
Air: 1.0, Water: 1.33, Glass: 1.5
Enter the medium the ray enters
Results
Enter angles and refractive indices
Snell's Law
Formula
n₁ × sin(θ₁) = n₂ × sin(θ₂)
Therefore: θ₂ = arcsin((n₁ × sin(θ₁)) / n₂)
Where:
- • n₁ = refractive index of medium 1
- • n₂ = refractive index of medium 2
- • θ₁ = incident angle
- • θ₂ = refracted angle
Common Refractive Indices
- • Air: 1.0003
- • Water: 1.333
- • Glass: 1.5-1.9
- • Diamond: 2.42