Auto-scale STL/OBJ/GLB models to fit any printer bed (X/Y/Z mm). Maintains proportions. Browser-based, no upload.
Upload your model and enter your printer bed dimensions (X, Y, Z in mm)
We compute the maximum uniform scale that fits within the bed
Download a rescaled model with bed-perfect dimensions
0 bytes uploaded. Model Scaler runs entirely in your browser using three.js and WebGL. Your meshes never leave your device.
Yes — uniform scaling along all three axes. The model isn't squashed or stretched to fit.
It's left unchanged. We never upscale automatically — that would reduce print quality.
Bambu A1: 256×256×256. Prusa MK4: 250×210×220. Ender 3: 220×220×250. Resin (Mars 4): 153×77×175. Use these as defaults if you don't know your printer's bed.
Compute the X/Y/Z bounding box of any STL, OBJ, or GLB mesh. Get exact print dimensions in mm — useful for fitting models to your printer bed.
Open toolRescale STL/OBJ/GLB meshes between inches, cm, and mm in one click. Browser-based — no upload, no calibration headaches.
Open toolTest 6 canonical orientations and rank by support area, footprint, and overhang. Find the print-friendly pose without manual rotation. Browser-based.
Open tool