STL resizer
Downloaded models arrive at arbitrary scales. Set the size you want for the longest side, in millimetres, and the whole model scales uniformly, so your slicer opens it at exactly that size.
Choose a file to see its details here. Nothing is uploaded: everything runs in your browser.
How to use the stl resizer
- 1Open a modelDrop a GLB, glTF, OBJ, STL, PLY, FBX, 3MF, DAE or USDZ file. It stays on your device.
- 2Read the resultsStats appear instantly: triangles, vertices, materials, size and, for closed meshes, volume.
- 3Act on itResize, simplify or convert the model with the related tools below.
Tips for better results
- Scaling is uniform, so proportions never change.
- Check that thin parts are still thick enough after scaling down.
Scaling for print
- Miniatures: 28–32 mm tall for a human-sized figure.
- Desk figurines: 80–150 mm is a common, printable range.
- Functional parts: use the real dimension from a drawing, not a guess.
- Scaling down thins every wall. Check that the thinnest parts still exceed about 0.8 mm on FDM.
Questions
- Do I need to sign up to try it?
- No. The preview runs in your browser without an account. You only need a plan to download the result.
- Is my file private?
- Yes. Processing happens on your device. Nothing is uploaded unless you save a result to your account.