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Temporary workspaceCompare two 3D models visually and inspect their properties. STEP pairs additionally support automatic solid differences.
Upload two versions once
Upload A and B; the pair remains fixed until you start a new comparison. STEP pairs calculate red/blue solid differences automatically. Other 3D formats use visual side-by-side, overlay or A/B views.
Preserve coordinates
No automatic alignment is performed. Centering is a display option, not a geometric registration.
Know the geometry
Mesh results are approximate; STL/OBJ assume mm. Do not compare physical dimensions before verifying source units. DWG and DXF drawings use the separate 2D viewer for bounded preview and basic measurement; they are not 3D mesh inputs.
Input formats: STEP / STP
General steps for uploading, viewing, sectioning, measuring, converting and exporting are explained once in How it works. This page covers what is specific to this file type.
Real CADProps screenshots
The screenshots show the English interface. Captions and instructions describe the same operations.
Sample source and verification
Sample source and verification
Sample source and verification
Sample source and verification
When a result needs another check
Viewing can start without an account. Conversion, account storage and share creation require signing in. Temporary files expire after the displayed retention period. Read the privacy statement for server processing and deletion, and the accuracy notes before using numerical results. Do not assume that hiding a part, clipping it or exploding an assembly changes the exported source geometry.
When a result needs another check · Input formats
Continue with a related task
- STEP File Dimensions Online: Measure X, Y, Z & Distances
- STEP File Viewer Online: Open STP Files, No Account
- Batch STEP Properties: Export CAD Measurements to CSV
Original article: CADProps · https://www.cadprops.com/tools/compare-cad-files/
