Snell's Law Calculator
Optics & Physics Angle Calc
$3.99 · Designed for iPad. Not verified for macOS.
Snell’s Law Calculator – Refraction & Refractive Index Tool
Snell’s Law Calculator is a powerful and easy-to-use physics calculator for solving light refraction problems instantly. Calculate the angle of incidence, angle of refraction, or refractive index with a real-time visual ray diagram and automatic formula updates.
Perfect for physics students, optics learners, teachers, and engineers. This calculator makes refraction calculations simple and precise.
Calculate Instantly
Solve for:
Angle of Incidence (θ₁)
Angle of Refraction (θ₂)
Refractive Index of Medium 1 (n₁)
Refractive Index of Medium 2 (n₂)
Based on the Snell’s Law formula:
n₁ · sin(θ₁) = n₂ · sin(θ₂)
All calculations update in real time as you adjust angles or refractive indices.
Interactive Visual Ray Diagram
- Live incident and refracted ray visualization
- Automatic angle display on diagram
- Clear interface between two media
- See how light bends when passing from air to water, glass, acrylic, diamond, and more
Perfect for understanding optics and wave behavior visually.
Built-in Material Presets
Quickly select common media:
- Air
- Water
- Ice
- Glass (Crown)
- Glass (Flint)
- Acrylic
- Diamond
Or manually enter custom refractive index values for advanced physics problems.
Designed for Precision
- Real-time calculation
- Supports up to 16 decimal places
- Adjustable sliders for fast input
- Manual numeric entry supported
- Degree/Radian unit display
- Copy results to other apps
- Formula shown for reference
Optimized for iPhone & iPad
- Clean, modern iOS design
- Lightweight and fast
- Works seamlessly on both iPhone and iPad
- Ad-free experience
- Privacy-focused — no unnecessary data collection
Perfect For
- High school physics students
- College optics courses
- Engineering calculations
- Homework and exam preparation
- Quick refractive index verification
Understand how light behaves at the boundary between two media and visualize refraction instantly.
Download Snell’s Law Calculator today and solve optics problems faster and more accurately.
Visit nitrio.com for more powerful calculator apps for iOS.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- Optimized for the latest devices.
- Fixed minor bugs.
- Improved and redesigned the UI.
The developer, Nitrio, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Tan Chia Ling
- Size
- 490.5 KB
- Category
- Utilities
- Compatibility
Requires iOS 15.6 or later.
- iPhone
Requires iOS 15.6 or later. - iPad
Requires iPadOS 15.6 or later. - iPod touch
Requires iOS 15.6 or later. - Mac
Requires macOS 12.5 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © Tan Chia Ling
