Physics

Snell's Law Calculator

Lets users compute and verify snell's law instantly with formula, steps and examples — no manual math.

Enter your details

°
090
Your result
Angle of refraction
22.0824 °

Refraction angle = 22.08°.

Result
Refraction occurs

About this calculator

Snell's law: n₁ sin θ₁ = n₂ sin θ₂. When light goes to a less dense medium beyond the critical angle, sin θ₂ > 1 and total internal reflection occurs — the basis of optical fibres.

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