2D:4D Ratio Estimator

Estimate your digit ratio by uploading a photo of your hand. Mark your index and ring fingers, and the site will calculate your 2D:4D ratio instantly.

Upload Hand Image
Upload a clear image of your hand with fingers spread out

Drag and drop your hand image here or click to browse

Privacy Notice: All image processing occurs entirely within your browser. No data or images are uploaded or stored on any server.