Snell's Law Calculator
Calculate refraction and critical angle with Snell's law.
Angle of refraction
70.1276 deg
Critical angle
48.7535 deg
Refraction ratio
1.33
Total internal reflection
No
Status
Refraction is possible.
Formula
n1 × sin(θ1) = n2 × sin(θ2).
Use the Snell's law calculator to estimate refraction between two media and check whether total internal reflection occurs.
How to Use
Use the Snell's law calculator to estimate refraction between two media and check whether total internal reflection occurs. Fill in Angle of incidence, Index one, and Index two, then review the calculated Angle of refraction, Critical angle, Refraction ratio, Total internal reflection, and Status.
- Open the calculator : Start with Snell's Law Calculator.
- Enter values : Fill in the required inputs and any optional settings.
- Review the result : Read the output and use the about page for more detail if needed.
Common Questions
What formula does the Snell's Law Calculator use?
n1 × sin(θ1) = n2 × sin(θ2).