3D Model Viewer (STL/OBJ)
Drop an STL or OBJ file and inspect it in real 3D: orbit, pan and zoom with the mouse or touch, switch between shaded, wireframe and flat views, and light the model from any angle. The tool reports the numbers a 3D-printing job actually needs — bounding box dimensions, triangle count, surface area and an estimated volume, with a quick check for common mesh problems like inverted normals. Scale readouts to millimeters or inches and screenshot the view for documentation. Files render locally; nothing uploads.
Runs 100% in your browser — simulations are computed locally on your device.
Read the full guide to this tool
Notes
- The 3D engine (three.js, about 600 KB) is downloaded from a CDN on first use, then cached by your browser.
- Both binary and ASCII STL are supported; OBJ files load their geometry (materials and textures are ignored).
- Volume is computed with the signed-tetrahedron method, which is exact for watertight meshes; models with holes or flipped faces get a warning instead of a wrong number.
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