Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Optics
F-Number Calculator
Compute the f-number (f-stop) of a lens by dividing its focal length by the aperture diameter. Use it when selecting lenses, comparing lens speed, or setting exposure in photography.
Fill in the required fields to see your result.
Optics
Snell's Law Calculator
Determine the refraction angle when light passes between two media of different refractive indices using Snell's Law. Useful in optics coursework, lens design, and understanding phenomena like rainbows and fiber optics.
Fill in the required fields to see your result.
Key differences
| F-Number Calculator | Snell's Law Calculator | |
|---|---|---|
| Category | Optics | Optics |
| Inputs required | 2 | 3 |
| Result | F-Number | Refracted Angle (°) |
| What it does | Compute the f-number (f-stop) of a lens by dividing its focal length by the aperture diameter. Use it when selecting lenses, comparing lens speed, or setting exposure in photography. | Determine the refraction angle when light passes between two media of different refractive indices using Snell's Law. Useful in optics coursework, lens design, and understanding phenomena like rainbows and fiber optics. |