Free 3D Model Tools, No Upload
Open a 3D model in the browser and turn it, measure it and check it before printing or sending it on: STL, OBJ, PLY, 3MF, glTF and GLB, and the CAD formats STEP and IGES. Convert between the mesh formats, and estimate what a print will cost from the volume, your filament price and the printer time.
Models are read and measured on your own device, so a part you designed for a client or a scan of something personal never leaves it. Large files work: the limits depend on your device, and the page tells you when a model is too big to turn smoothly. The CAD reader loads only when a STEP or IGES file is added, so the pages stay quick.
The 5 tools
- 3D model viewer Open STL, OBJ, 3MF, PLY, GLB and glTF models and STEP or IGES CAD files in your browser.
- STL viewer View STL files in 3D and get their size, volume and surface area.
- STEP viewer Open STEP, STP and IGES CAD files in your browser.
- 3D model converter Convert STEP, STL, OBJ, 3MF, PLY and glTF files to STL, OBJ, 3MF, PLY or GLB in your browser, one or many at once, in the right unit.
- 3D print cost calculator Work out what a 3D print weighs and costs from an STL, a 3MF or your slicer's G-code, with electricity for the print time and a markup.