What transform order is used?

Scale, then X/Y/Z rotation, then translation, then optional center X/Y and place on bed. The after-bounds show the final result.

Does it convert millimetres and inches automatically?

No. Use the scale factor for unit conversion; the converter preserves numeric source units.

Which formats can I drop?

STL, OBJ, PLY, 3MF, GLB, and self-contained glTF are accepted. The output is binary STL.

In what order are scale, rotation, and translation applied?

Scale first, then X/Y/Z rotation, then translation, followed by centering and place-on-bed. The order is shown on the tool page and affects the final position.

Why did my model move after rotation?

Rotation is around the source origin unless centering is enabled. Enable center X/Y or place-on-bed to control the final position predictably.

Transform & optimize/Dimensions

Transform and place mesh (local)

Scale, rotate, translate, center and place a mesh on the bed locally. The Worker parses STL, OBJ, PLY, 3MF, GLB, or self-contained glTF, applies the numeric transform, and writes a binary STL without uploading the model.

ReadyNo uploadWorkerSTL · OBJ · PLY · 3MF · GLB · glTF

Tool facts

Formats: STL · OBJ · PLY · 3MF · GLB · glTF
Output: Mesh file
Worker: Yes
Max file: 500 MB
Runs: in your browser

Why local

Transformed mesh

No upload

Transformed mesh

Order: scale → rotate X/Y/Z → translate → center X/Y and/or place on bed. Source units are preserved; the output is binary STL.

ScaleRotate (degrees) XRotate (degrees) YRotate (degrees) ZTranslate (source units) XTranslate (source units) YTranslate (source units) Z

Center X / YPlace on bed (Z = 0)

Order: scale → rotate X/Y/Z → translate → center X/Y and/or place on bed. Source units are preserved; the output is binary STL.

Drop a mesh to transform

STL, OBJ, PLY, 3MF, GLB, or a self-contained glTF. Scale, rotate, translate, center and place on the bed; output is binary STL.

Choose a file

Max file size: 500 MB · No upload

No upload · File.slice() / ArrayBuffer → Worker → transformed STL.

How it works

1
Drop a mesh file in any supported format.
2
Set scale, X/Y/Z rotation, translation, and optionally center X/Y or place on the bed.
3
Apply the transform in the Worker and inspect the before/after bounds.
4
Download the transformed binary STL. No upload is performed.

What the numbers mean

Transform order

The exact order is scale → rotate X → rotate Y → rotate Z → translate → center X/Y → place on bed. Rotations occur around the source origin before translation.

Units

Source coordinates are preserved as numeric values; this tool does not convert units. A scale of 2 doubles every coordinate. The output is binary STL in the same numeric unit.

Printing notes

Use scale to convert units when needed, then place on bed to set Z minimum to zero.
Center X/Y is applied after translation and before placing on the bed.
Verify the after-bounds against your printer bed before slicing.

Questions

References

· ISO/ASTM 52900
· STL coordinate units and build orientation