Snell's Law Calculator

Snell's law states that the ratio of the sines of the angles of incidence and refraction of a wave are constant when it passes between two given media. The law is also known as Snell–Descartes law and the law of refraction. It describes the relationship between the angles of incidence and refraction of light or other waves passing through a boundary between two different isotropic media, such as water, glass, or air. Given here is an online snell's law calculator that allows you to calculate the refraction index based on the input values.

Refraction Index Calculator

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Snell's law applies to the refraction of light in any situation, regardless of what the two media are.