Thin Lens Image Position

How to use this tool

1. Find image distance and signed magnification for a thin lens and real object.
2. Set signed focal length, object distance in the indicated units.
3. Calculate and compare signed image distance, signed magnification.

Try this example

{
  "f": 50,
  "s": 100
}

Accuracy and scope

Idealized educational model. Enter measured values in the displayed units; real systems may require additional corrections.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.