What are free tools for make photo 3D models?

Free tools for making 3D models from photos include open-source photogrammetry software (Meshroom), mobile apps (Sketchfab 3D Scan), and Blender with photogrammetry add-ons. Meshroom auto-generates 3D meshes from multiple photos via photogrammetry—simple for desktop users. Sketchfab’s app simplifies mobile object scanning and exports ready-to-use 3D files. Blender, a full 3D suite, uses add-ons (e.g., Photogrammetry Toolkit) to turn photos into editable assets. Beginners should start with Sketchfab’s app (quick mobile scans) or Meshroom (desktop projects)—both are free and require no advanced skills.