The Snell’s Law Calculator is a simple physics tool used to calculate the angle of refraction when a light ray passes from one medium to another. It applies Snell’s Law, expressed as n1sin⁡(θ1)=n2sin⁡(θ2)n₁ \sin(θ₁) = n₂ \sin(θ₂)n1​sin(θ1​)=n2​sin(θ2​), where n1n₁n1​ and n2n₂n2​ are the refractive indices of the two media, and θ1θ₁θ1​ and θ2θ₂θ2​ represent the angles of incidence and refraction respectively. By entering these values, users can quickly determine how much light bends as it crosses from air to water, glass, or any other medium. This calculator is useful for physics students, teachers, and researchers studying optics and the behavior of light at the boundary between different materials.