Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Optics
Magnification Calculator
Compute the optical magnification of a lens or mirror by comparing the image height to the object height. Use it to determine whether a lens enlarges, reduces, or inverts an object.
Fill in the required fields to see your result.
Optics
Focal Length Calculator
Find the focal length of a lens given the distance to the object and the distance to the formed image. Essential for photographers, opticians, and physics students working with thin-lens optics.
Fill in the required fields to see your result.
Key differences
| Magnification Calculator | Focal Length Calculator | |
|---|---|---|
| Category | Optics | Optics |
| Inputs required | 2 | 2 |
| Result | Magnification (×) | Focal Length (cm) |
| What it does | Compute the optical magnification of a lens or mirror by comparing the image height to the object height. Use it to determine whether a lens enlarges, reduces, or inverts an object. | Find the focal length of a lens given the distance to the object and the distance to the formed image. Essential for photographers, opticians, and physics students working with thin-lens optics. |