Open STP models for a local browser preview. If local conversion fails or the export is unavailable in the browser, conversion automatically switches to the server with a private upload; sign-in is required.
Drop STP file to preview
or click to choose a file
Max file size: 200 MiB
Only data supported by the target format can be exported. Check dimensions, materials and animation in the result before using it in another application.
Local previews and browser conversions keep file processing on your device. If local conversion fails or requires the server, the model is automatically uploaded to private storage; temporary uploads and results are cleaned up after 24 hours.
Local file previews stay in your browser without sign-in. Supported formats are converted in your browser first, including large models. Conversion automatically switches to the server with a private upload if local conversion fails, or for FBX and USDZ with skins or animation. Server conversion requires sign-in.
Drag and drop your .stp file into the free online STP file viewer, or click to browse. AI 3D Model supports STP files up to 200 MiB — large enough for complex mechanical assemblies, multi-part CAD models, and production-grade engineering designs.
Local file previews stay in your browser without sign-in. Supported formats are converted in your browser first, including large models. Conversion automatically switches to the server with a private upload if local conversion fails, or for FBX and USDZ with skins or animation. Server conversion requires sign-in.
Review your STP model's geometry, dimensions, and part structure before importing into SolidWorks, Fusion 360, or your manufacturing pipeline. Need a different format? Use AI 3D Model's 3D File Converter to convert STP to STL, OBJ, or GLB.
Open STP models for a local browser preview. Local file previews stay in your browser without sign-in. Supported formats are converted in your browser first, including large models. Conversion automatically switches to the server with a private upload if local conversion fails, or for FBX and USDZ with skins or animation. Server conversion requires sign-in.
Upload and view STP files up to 200 MiB — double the limit of most free online STP file viewers. Handle complex mechanical assemblies, multi-component CAD models, and detailed engineering prototypes without compression or file splitting.
Local file previews stay in your browser without sign-in. Supported formats are converted in your browser first, including large models. Conversion automatically switches to the server with a private upload if local conversion fails, or for FBX and USDZ with skins or animation. Server conversion requires sign-in.
Local previews and browser conversions keep file processing on your device. If local conversion fails or requires the server, the model is automatically uploaded to private storage; temporary uploads and results are cleaned up after 24 hours.
Unlike basic mesh viewers, this online STP file viewer preserves part colors from your original CAD model and renders multi-body assemblies as structured groups. Visually distinguish components in complex .stp assemblies at a glance — no color data lost.
From quick design reviews to supplier file checks — this free STP file viewer helps engineers, designers, and makers inspect CAD models without installing SolidWorks or Autodesk software.
Open .stp files from suppliers, clients, or colleagues without launching SolidWorks or NX. Use this free online STP file viewer to inspect part geometry, check assembly structure, and verify dimensions before importing into your CAD workflow — from any browser, on any machine.
Preview .stp exports from Fusion 360, Rhino, or CATIA to review industrial designs before handoff to manufacturing. This STP file viewer online renders part colors and multi-body assemblies — ideal for quick design reviews without a full CAD license.
View STP files downloaded from GrabCAD or your own CAD tools before converting to STL for slicing. STP preserves exact B-rep geometry (unlike mesh approximations in STL), so inspecting the .stp source first helps you catch design issues before they become failed prints.
Received an .stp file from a supplier? Open and inspect it instantly with this free STP file viewer — verify that the part design matches your specifications without waiting for an engineer to open it in CAD software. No technical expertise required.
No SolidWorks student license? No Autodesk subscription? No problem. Use this free online STP file viewer to open .stp files for engineering coursework, study CAD assemblies, and review design projects — all from a web browser on any device.
Review STP CAD files before machining to confirm part geometry, critical features, and overall design intent. This online STP file viewer lets shop floor operators and CNC programmers inspect .stp designs without a dedicated CAD workstation.
See how mechanical engineers, product designers, and manufacturers use this free STP viewer to speed up their daily CAD review workflow.
“I used to launch SolidWorks every time a supplier sent an .stp file. Now I just drag it into this STP file viewer and check the geometry in seconds. The assembly view with part colors is surprisingly good for a free browser tool.”
David Park
Mechanical Design Engineer
“Our procurement team uses this STP file viewer to preview .stp files from vendors before forwarding to engineering. Nobody needs SolidWorks or Autodesk software — it just works in Chrome. The 200MB limit handles even our largest multi-part assemblies.”
Rachel Torres
Supply Chain Manager
“As a freelance industrial designer, I work across Fusion 360, SolidWorks, and Rhino. This free STP file viewer is perfect for quickly checking client .stp files — especially on machines that don't have all three CAD suites installed.”
Marco Visconti
Industrial Designer
Answers to common questions about .stp files, how to open them, and what makes this viewer different.
Open 3D models for a local browser preview. Local file previews stay in your browser without sign-in. Supported formats are converted in your browser first, including large models. Conversion automatically switches to the server with a private upload if local conversion fails, or for FBX and USDZ with skins or animation. Server conversion requires sign-in.
Describe it, generate it — create 3D models straight from text prompts.
Open STP models for a local browser preview. Conversion has no additional fee. Local file conversion does not require sign-in; server conversion does. Generation usage and existing download entitlements for generated assets still apply.
Used daily by engineers, designers, and procurement teams across 50+ countries.