Refraction Calculator
Apply Snell's law to find the angle of refraction, the angle of incidence or a refractive index. Find the speed of light in a material and the critical angle, with common materials to choose from.
What you can do
- Snell's law for either angle or the second index
- Refractive index from the speed of light in a material
- Critical angle between any two materials
- Tells you when total internal reflection happens instead
- Air, water, glass, diamond and more to choose from
- Ray diagram drawn to scale, tinted by refractive index