Real-World Dimension Estimator (Single-View)

1) Load image or start camera

Note: webcam requires HTTPS on the web; it works on localhost.
2) Enter known distance Z (meters)
3) Click two points to measure
Tip: hover to use the zoom lens.
Load an image or start camera, enter Z, click two points.
Calibration (from your camera)

  
Zoom lens (10×) centered on cursor for precise clicks.