Lens & Mirror Equation Calculator

Solve focal length, object distance, image distance, and magnification (1/f = 1/do + 1/di) for optics.

Image Distance (d_i)
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Real & Inverted Image
Magnification (M = -d_i/d_o): -1.00×

How to Use

  1. Enter the focal length and object distance.
  2. Select Image Properties to view the image distance (d_i).