Agree the scale
The STL receiving workflow needs a unit convention. Verify one known dimension after export; fitting a model to the viewport does not check its physical scale.
CADProps · CAD tools
STEP to STL: Conversion Guide & Mesh Settings
STEP to STL is not available in this release. Read the format notes and ask your sender for a self-contained STEP file.
Not available in this release
This format or conversion is not supported. Ask the sender to export a self-contained STEP file, then inspect it with the STEP viewer.
Open STEP viewer →Before you use the result
Know what you are looking at.
Use STL when the next application needs a triangle mesh. Choose export settings for that task, and check one known dimension after import rather than assuming the unit survived.
Use resolution for the task
Export parameters can control how curved surfaces become triangles. A smooth shaded preview does not prove that the actual silhouette is sufficiently detailed. Inspect the regions that matter to the print or analysis task.
Keep source and derivative together
An STL output should identify the source revision and settings. Do not replace the native or STEP source when later CAD work may need the richer geometry. Model format conversion is not available in this release.
Questions about this task
Know the limits.
Which files can I process?
Supported inputs are STEP/STP, IGES/IGS, STL, OBJ, 3MF, static GLB/GLTF, bounded ZIP packages and DWG 2D previews. Capabilities depend on format. Native CAD formats and downloadable model conversion are unavailable.
Are files uploaded?
Yes. Selecting or dropping files uploads and processes them immediately in every tool. Files are processed temporarily on this server. The workspace displays the configured retention time. Delete in the file menu permanently removes your files; closing a view does not.
Do I need an account?
No. Your temporary workspace uses a browser session cookie. There is no account, subscription or permanent file library.
How are properties calculated?
STEP/IGES use B-Rep geometry; mesh files use approximate triangle properties and require closed consistent meshes for volume. DWG is a 2D preview without physical properties. STL/OBJ coordinates assume mm. Mass uses your chosen density.
Related reading
Checks that help with this file.
TroubleshootingReduce STEP File Size: Keep Required CAD Geometry
Distinguish archive compression, model simplification and display optimization before changing a CAD handoff.
Read the guide →
File formatsSTEP vs STL: CAD Measurement, Geometry and Accuracy
STEP and STL serve different jobs. Learn what changes when surfaces become triangles and which checks belong in a CAD handoff.
Read the guide →ConversionSTL Export Settings: Mesh Resolution, Units and Scale
Choose tessellation settings for the receiving task and verify curved features, thin regions and units after exporting.
Read the guide →