# CAD Tools & Measurement Guides: Site Map

Find tools, engineering guides and information about this release.

## Tools

- [SolidWorks viewer](https://www.cadprops.com/tools/solidworks-viewer/index.md)
- [STEP viewer](https://www.cadprops.com/tools/step-viewer/index.md)
- [Parasolid X_T / X_B viewer](https://www.cadprops.com/tools/parasolid-viewer/index.md)
- [IGES / IGS viewer](https://www.cadprops.com/tools/iges-viewer/index.md)
- [STL viewer](https://www.cadprops.com/tools/stl-viewer/index.md)
- [SolidWorks to STEP](https://www.cadprops.com/tools/solidworks-to-step/index.md)
- [STEP to STL](https://www.cadprops.com/tools/step-to-stl/index.md)
- [Parasolid X_T to STEP](https://www.cadprops.com/tools/parasolid-to-step/index.md)
- [CAD to GLB](https://www.cadprops.com/tools/step-to-glb/index.md)
- [Weight calculator](https://www.cadprops.com/tools/cad-weight-calculator/index.md)
- [Volume calculator](https://www.cadprops.com/tools/cad-volume-calculator/index.md)
- [Dimensions & measure](https://www.cadprops.com/tools/cad-dimensions/index.md)
- [Surface area](https://www.cadprops.com/tools/cad-surface-area/index.md)
- [Compare two files](https://www.cadprops.com/tools/compare-cad-files/index.md)
- [Batch CAD processing](https://www.cadprops.com/tools/batch-cad-processing/index.md)
- [OBJ viewer](https://www.cadprops.com/tools/obj-viewer/index.md)
- [Rhino 3DM viewer](https://www.cadprops.com/tools/3dm-viewer/index.md)
- [3MF viewer](https://www.cadprops.com/tools/3mf-viewer/index.md)
- [GLB viewer](https://www.cadprops.com/tools/glb-viewer/index.md)
- [GLTF viewer](https://www.cadprops.com/tools/gltf-viewer/index.md)
- [ZIP CAD package viewer](https://www.cadprops.com/tools/zip-viewer/index.md)
- [DWG / DXF viewer](https://www.cadprops.com/tools/dwg-viewer/index.md)
- [Siemens NX / UG NX viewer](https://www.cadprops.com/tools/nx-viewer/index.md)
- [Siemens NX / UG NX to STEP](https://www.cadprops.com/tools/nx-to-step/index.md)
- [Autodesk Inventor viewer](https://www.cadprops.com/tools/inventor-viewer/index.md)
- [Autodesk Inventor to STEP](https://www.cadprops.com/tools/inventor-to-step/index.md)
- [CATIA viewer](https://www.cadprops.com/tools/catia-viewer/index.md)
- [CATIA to STEP](https://www.cadprops.com/tools/catia-to-step/index.md)
- [ACIS SAT / SAB viewer](https://www.cadprops.com/tools/acis-viewer/index.md)
- [JT solid viewer](https://www.cadprops.com/tools/jt-viewer/index.md)
- [IGES to STEP](https://www.cadprops.com/tools/iges-to-step/index.md)
- [STEP to IGES](https://www.cadprops.com/tools/step-to-iges/index.md)
- [STEP to OBJ](https://www.cadprops.com/tools/step-to-obj/index.md)
- [STEP to 3MF](https://www.cadprops.com/tools/step-to-3mf/index.md)
- [STEP to glTF](https://www.cadprops.com/tools/step-to-gltf/index.md)
- [STL to OBJ](https://www.cadprops.com/tools/stl-to-obj/index.md)
- [OBJ to STL](https://www.cadprops.com/tools/obj-to-stl/index.md)
- [Solid Edge viewer](https://www.cadprops.com/tools/solid-edge-viewer/index.md)
- [Creo file check](https://www.cadprops.com/tools/creo-viewer/index.md)
- [DWF / DWFx viewer](https://www.cadprops.com/tools/dwf-viewer/index.md)
- [3DXML viewer](https://www.cadprops.com/tools/3dxml-viewer/index.md)
- [G-code viewer](https://www.cadprops.com/tools/gcode-viewer/index.md)

## Guides

- [3MF vs STEP: Additive Manufacturing Package or Exact CAD Exchange?](https://www.cadprops.com/guides/3mf-vs-step/index.md)
- [3MF vs STL: Units, Multiple Parts and Mesh Handoff](https://www.cadprops.com/guides/3mf-vs-stl/index.md)
- [Annotate a CAD Model Online and Share Review Notes](https://www.cadprops.com/guides/annotate-cad-model-online/index.md)
- [Autodesk Fusion AutoTimeline: Why CAD Feature Recognition Matters Again](https://www.cadprops.com/guides/autodesk-fusion-autotimeline-feature-recognition/index.md)
- [Export STEP Properties to Excel: Batch CAD Measurements](https://www.cadprops.com/guides/batch-cad-properties-to-excel/index.md)
- [Blind Tapped Hole Depth: Separate Thread Depth from Drill Depth](https://www.cadprops.com/guides/blind-tapped-hole-depth/index.md)
- [CAD File Conversion Checklist: Units, Solids & Accuracy](https://www.cadprops.com/guides/cad-conversion-checklist/index.md)
- [CAD File Size vs Part Weight: Why MB Does Not Mean Mass](https://www.cadprops.com/guides/cad-file-size-vs-part-weight/index.md)
- [STEP File Scale Wrong by 25.4? Fix Inch and mm Units](https://www.cadprops.com/guides/cad-model-wrong-scale-25-4/index.md)
- [CAD Tessellation: When a Solid Becomes a Triangle Mesh](https://www.cadprops.com/guides/cad-tessellation/index.md)
- [CAD Versions vs Revisions: Track Models and Exports](https://www.cadprops.com/guides/cad-versions-vs-revisions/index.md)
- [CADProps File Storage and Expiry: 200 MB, 100 Files and 90 Days](https://www.cadprops.com/guides/cadprops-storage-and-expiry/index.md)
- [How to Calculate Volume from a STEP File](https://www.cadprops.com/guides/calculate-step-volume/index.md)
- [Calculate STEP File Weight from Volume and Density](https://www.cadprops.com/guides/calculate-weight-from-step/index.md)
- [CATProduct Missing Parts? Fix CATIA Assembly References](https://www.cadprops.com/guides/catproduct-missing-parts/index.md)
- [Check a CAD Assembly Before RFQ: Completeness & Scope Checklist](https://www.cadprops.com/guides/check-cad-assembly-before-rfq/index.md)
- [Check a Supplier STEP File Against a Drawing Before Quotation](https://www.cadprops.com/guides/check-step-file-against-drawing-before-quote/index.md)
- [CNC Hole Edge Distance: Leave Enough Material Around Drilled Features](https://www.cadprops.com/guides/cnc-hole-edge-distance/index.md)
- [CNC Internal Corner Radius: Design Pockets for Real End Mills](https://www.cadprops.com/guides/cnc-internal-corner-radius/index.md)
- [Minimum Wall Thickness for CNC Machining: No Single Safe Number](https://www.cadprops.com/guides/cnc-minimum-wall-thickness/index.md)
- [Compare CAD Revisions: Geometry and Property Checks](https://www.cadprops.com/guides/compare-cad-revisions/index.md)
- [Convert DWG or DXF to PDF, SVG or DXF Online](https://www.cadprops.com/guides/convert-dwg-to-pdf-online/index.md)
- [Deep Hole Drilling: Use Depth-to-Diameter Ratio Before You Quote](https://www.cadprops.com/guides/deep-hole-drilling-depth-to-diameter-ratio/index.md)
- [Does a STEP File Contain a BOM? Structure, Names and Quantities](https://www.cadprops.com/guides/does-step-file-contain-bom/index.md)
- [Does a STEP File Contain Material? What You Can Trust](https://www.cadprops.com/guides/does-step-file-contain-material/index.md)
- [Does a STEP File Contain Tolerances and GD&T?](https://www.cadprops.com/guides/does-step-file-contain-tolerances/index.md)
- [DWG Layers Missing or Not Showing? Check Visibility Before Converting](https://www.cadprops.com/guides/dwg-layers-not-showing/index.md)
- [DWG vs DXF: Which Drawing Format Should You Send?](https://www.cadprops.com/guides/dwg-vs-dxf/index.md)
- [DXF Scale Wrong? Check Drawing Units Before Resizing](https://www.cadprops.com/guides/dxf-units-wrong-scale/index.md)
- [How to Use CADProps: Open, Inspect and Save a CAD File](https://www.cadprops.com/guides/get-started-with-cadprops/index.md)
- [GLB and glTF for CAD Handoff: A Viewing Mesh, Not the Source](https://www.cadprops.com/guides/glb-gltf-for-cad-handoff/index.md)
- [GLB vs glTF for CAD: 3D Model Files, Assets and Units](https://www.cadprops.com/guides/glb-vs-gltf-for-cad/index.md)
- [glTF Missing Textures? Fix .bin and Image File Paths](https://www.cadprops.com/guides/gltf-missing-textures/index.md)
- [IAM Missing Parts? Fix Autodesk Inventor Assembly References](https://www.cadprops.com/guides/iam-missing-parts/index.md)
- [IGES File (.igs, .iges): What It Is and How to Open It](https://www.cadprops.com/guides/iges-file-what-it-is-how-to-open/index.md)
- [IGES Surfaces Not Solid? Check Volume and Open Shells](https://www.cadprops.com/guides/iges-surfaces-not-solid/index.md)
- [IGES vs Parasolid: Surfaces, Solids and CAD Exchange](https://www.cadprops.com/guides/iges-vs-parasolid/index.md)
- [JT vs STEP: Lightweight Collaboration or Neutral CAD Exchange?](https://www.cadprops.com/guides/jt-vs-step/index.md)
- [Manage CADProps Share Links: Passwords, Expiry and Revocation](https://www.cadprops.com/guides/manage-cad-share-links/index.md)
- [Measure STEP Files Online: Dimensions, Distances & Units](https://www.cadprops.com/guides/measure-step-file/index.md)
- [Native CAD vs STEP for Supplier Handoff: Which File Should You Send?](https://www.cadprops.com/guides/native-cad-vs-step-supplier-handoff/index.md)
- [How to Convert NX PRT to STEP: Units & Assembly Checks](https://www.cadprops.com/guides/nx-prt-to-step/index.md)
- [OBJ Mesh Units and Volume: Check Scale and a Closed Shell](https://www.cadprops.com/guides/obj-mesh-units-and-closure/index.md)
- [OBJ File Has No Materials? Fix Missing MTL and Texture Paths](https://www.cadprops.com/guides/obj-mtl-file-missing/index.md)
- [Open a Rhino 3DM File Without Rhino](https://www.cadprops.com/guides/open-3dm-without-rhino/index.md)
- [Open CAD Files on Mac: STEP Viewers and Format Options](https://www.cadprops.com/guides/open-cad-files-on-mac/index.md)
- [How to Open a CATPart File Online Without CATIA](https://www.cadprops.com/guides/open-catpart-without-catia/index.md)
- [How to Open a CATProduct File Without CATIA](https://www.cadprops.com/guides/open-catproduct-without-catia/index.md)
- [Open a Creo File Without Creo](https://www.cadprops.com/guides/open-creo-without-creo/index.md)
- [Open DWG or DXF Files Without AutoCAD](https://www.cadprops.com/guides/open-dwg-dxf-without-autocad/index.md)
- [F3D Files: How to Open a Fusion 360 Design Online Without Fusion](https://www.cadprops.com/guides/open-f3d-file-online/index.md)
- [G-code Files: What They Are and How to Open Them Online](https://www.cadprops.com/guides/open-gcode-file-online/index.md)
- [How to Open an IAM File Without Autodesk Inventor](https://www.cadprops.com/guides/open-iam-without-inventor/index.md)
- [IFC Files: How to Open a BIM Model Online and What You Will See](https://www.cadprops.com/guides/open-ifc-file-online/index.md)
- [How to Open an IPT File Online Without Inventor](https://www.cadprops.com/guides/open-ipt-without-inventor/index.md)
- [JT File (.jt): What It Is and How to Open It Online](https://www.cadprops.com/guides/open-jt-file-online/index.md)
- [NEU Files: How to Open a Creo / Pro/ENGINEER Neutral File Online](https://www.cadprops.com/guides/open-neu-file-online/index.md)
- [How to Open an NX PRT File Online Without Siemens NX](https://www.cadprops.com/guides/open-nx-prt-without-nx/index.md)
- [PLT and HPGL Files: What They Are and How to Open Them Online](https://www.cadprops.com/guides/open-plt-hpgl-file-online/index.md)
- [PRC Files: What They Are and How to Open Them Online](https://www.cadprops.com/guides/open-prc-file-online/index.md)
- [How to Open SAT Files Online Without an ACIS CAD System](https://www.cadprops.com/guides/open-sat-file-online/index.md)
- [Open an SLDASM File Without SolidWorks or Convert to STEP](https://www.cadprops.com/guides/open-sldasm-without-solidworks/index.md)
- [How to Open SolidWorks SLDPRT Files Without SolidWorks](https://www.cadprops.com/guides/open-sldprt-without-solidworks/index.md)
- [Open a Solid Edge File Without Solid Edge](https://www.cadprops.com/guides/open-solid-edge-without-solid-edge/index.md)
- [How to Open and Measure an STL File Online](https://www.cadprops.com/guides/open-stl-file-and-measure/index.md)
- [U3D Files: What They Are and How to Open Them Online](https://www.cadprops.com/guides/open-u3d-file-online/index.md)
- [UNV Files: What They Are and How to Open Them Online](https://www.cadprops.com/guides/open-unv-file-online/index.md)
- [VDA-FS Files: What They Are and How to Open Them Online](https://www.cadprops.com/guides/open-vda-file-online/index.md)
- [How to Open an X_T File Online Without Parasolid Software](https://www.cadprops.com/guides/open-x-t-file-online/index.md)
- [X3D and X3DV Files: What They Are and How to Open Them Online](https://www.cadprops.com/guides/open-x3d-file-online/index.md)
- [Parasolid vs STEP: Which CAD Exchange File to Send](https://www.cadprops.com/guides/parasolid-vs-step/index.md)
- [Prepare CAD Data for First Article Inspection: Model & Drawing Checklist](https://www.cadprops.com/guides/prepare-cad-for-first-article-inspection/index.md)
- [Prepare a STEP File for a CNC Quote: A Shop-Ready RFQ Checklist](https://www.cadprops.com/guides/prepare-step-file-for-cnc-quote/index.md)
- [NX or Creo PRT File? Identify the CAD Format](https://www.cadprops.com/guides/prt-file-nx-or-creo/index.md)
- [Reamed Hole vs Drilled Hole: Use Precision Only Where the Fit Needs It](https://www.cadprops.com/guides/reamed-hole-vs-drilled-hole/index.md)
- [Reverse Vending Machine Planning: From CAD Layout to a Better Return Point](https://www.cadprops.com/guides/reverse-vending-machine-site-planning/index.md)
- [SAT vs IGES: ACIS Solids or Neutral CAD Surfaces](https://www.cadprops.com/guides/sat-vs-iges/index.md)
- [SAT vs STEP: ACIS Geometry or Neutral CAD Exchange?](https://www.cadprops.com/guides/sat-vs-step/index.md)
- [Save and Organize CAD Files in Your CADProps Library](https://www.cadprops.com/guides/save-cad-files-online/index.md)
- [Share CAD Files with Suppliers: STEP Handoff Checklist](https://www.cadprops.com/guides/share-cad-files-with-suppliers/index.md)
- [Share a CAD Model with a View-Only Link in CADProps](https://www.cadprops.com/guides/share-cad-model-link/index.md)
- [Share a Fixed CAD Revision: File and Version Checklist](https://www.cadprops.com/guides/share-fixed-cad-version/index.md)
- [SLDASM Missing Parts? Fix SolidWorks Assembly References](https://www.cadprops.com/guides/sldasm-missing-parts/index.md)
- [Reduce STEP File Size: Keep Required CAD Geometry](https://www.cadprops.com/guides/smaller-step-files/index.md)
- [SOLIDWORKS Future Version File? What an Older Release Can Open](https://www.cadprops.com/guides/solidworks-future-version-file/index.md)
- [SolidWorks STEP Export Missing Components? Check Selection, Suppression & Assembly State](https://www.cadprops.com/guides/solidworks-step-export-missing-components/index.md)
- [STEP AP203 vs AP214 vs AP242: Which Protocol to Export](https://www.cadprops.com/guides/step-ap203-ap214-ap242/index.md)
- [STEP AP242 Edition 4 in 2026: What It Means for CAD Handoffs](https://www.cadprops.com/guides/step-ap242-edition-4-2026/index.md)
- [STEP Assembly Flattened After Import? Check Structure and Names](https://www.cadprops.com/guides/step-assembly-flattened-after-import/index.md)
- [STEP Assembly Instances: Check Repeated-Part Totals](https://www.cadprops.com/guides/step-assembly-instance-properties-case/index.md)
- [Why STEP Files Lose the SolidWorks Feature Tree](https://www.cadprops.com/guides/step-export-no-feature-tree/index.md)
- [STEP File Bounding Box: Get Overall Dimensions Online](https://www.cadprops.com/guides/step-file-bounding-box/index.md)
- [STEP File (.step, .stp): What It Is and How to Open It](https://www.cadprops.com/guides/step-file-what-it-is-how-to-open/index.md)
- [STEP Hole Recognition: Detect Through and Blind Holes](https://www.cadprops.com/guides/step-hole-recognition/index.md)
- [STEP Inch Units: A Reproducible Dimension Check](https://www.cadprops.com/guides/step-inch-unit-check/index.md)
- [Open STEP Surface: Area Available, Volume Unavailable](https://www.cadprops.com/guides/step-open-surface-volume-case/index.md)
- [STEP Volume Changed After Conversion: What to Check](https://www.cadprops.com/guides/step-volume-changed-after-conversion/index.md)
- [STEP vs IGES: Which CAD Exchange Format Fits the Job?](https://www.cadprops.com/guides/step-vs-iges/index.md)
- [STEP vs STL: CAD Measurement, Geometry and Accuracy](https://www.cadprops.com/guides/step-vs-stl/index.md)
- [STEP vs STP: Same Exchange Format, Different Extension](https://www.cadprops.com/guides/step-vs-stp-file-extension/index.md)
- [STL Export Settings: Mesh Resolution, Units and Scale](https://www.cadprops.com/guides/stl-export-settings/index.md)
- [Do STL Files Have Units? How to Fix mm vs Inch Scale](https://www.cadprops.com/guides/stl-files-have-units/index.md)
- [Calculate Surface Area from a STEP File](https://www.cadprops.com/guides/surface-area-from-cad-file/index.md)
- [Threads Missing from a STEP File? Geometry, PMI and Shop Handoffs](https://www.cadprops.com/guides/threads-missing-from-step-file/index.md)
- [Watertight Mesh: When an STL Can Have a Volume](https://www.cadprops.com/guides/watertight-cad-mesh/index.md)
- [What B-Rep Means in a STEP or IGES File](https://www.cadprops.com/guides/what-is-brep/index.md)
- [STEP File Volume Zero or Missing? Check Solid Geometry](https://www.cadprops.com/guides/why-step-volume-is-zero/index.md)
- [STL Volume Zero or Missing? Check the Mesh Is Closed](https://www.cadprops.com/guides/why-stl-volume-is-zero/index.md)
- [Pack a CAD Assembly ZIP: Choose the Root and Keep Paths](https://www.cadprops.com/guides/zip-packaged-cad-models/index.md)

## Information

- [Open CAD Files: Identify Formats and Resolve Import Problems](https://www.cadprops.com/workflows/open-cad-files/index.md)
- [Measure CAD Properties: Units, Dimensions and Valid Volume](https://www.cadprops.com/workflows/measure-cad-properties/index.md)
- [Convert and Hand Off CAD: Prepare, Verify and Compare](https://www.cadprops.com/workflows/convert-and-handoff/index.md)
- [CAD Measurement Accuracy: Geometry, Units & Mass](https://www.cadprops.com/accuracy/index.md)
- [CAD File Format Compatibility Matrix: View, Measure & Convert](https://www.cadprops.com/supported-formats/index.md)
- [How to Measure CAD Files & Export Model Properties](https://www.cadprops.com/how-it-works/index.md)
- [CADProps Specifications: Data Handling, Limits and Formats](https://www.cadprops.com/specifications/index.md)
- [Terms of Service](https://www.cadprops.com/terms/index.md)
- [CADProps Press Coverage, Curated Lists & Directory Listings](https://www.cadprops.com/press/index.md)
- [Advertise on CADProps: Sponsored Placements for CAD Products](https://www.cadprops.com/advertise/index.md)
- [CADProps Editorial Policy: How Guides Are Written, Tested & Corrected](https://www.cadprops.com/editorial-policy/index.md)
- [Fast Online CAD Viewing with CADProps](https://www.cadprops.com/fast-cad-viewer/index.md)
- [CADProps Connector for Claude: Inspect CAD Files](https://www.cadprops.com/connector/index.md)
- [STEP File Tools: Viewer, Dimensions, Volume & Conversion](https://www.cadprops.com/step/index.md)
- [SolidWorks File Tools: SLDPRT/SLDASM Viewer & STEP Converter](https://www.cadprops.com/solidworks/index.md)
- [Siemens NX File Tools: PRT Viewer & STEP Converter](https://www.cadprops.com/siemens-nx/index.md)
- [CATIA File Tools: CATPart Viewer & STEP Converter](https://www.cadprops.com/catia/index.md)
- [Autodesk Inventor File Tools: IPT/IAM Viewer & STEP Converter](https://www.cadprops.com/inventor/index.md)
- [IGES File Tools: Viewer, Area, Volume and STEP Conversion](https://www.cadprops.com/iges/index.md)
- [JT File Tools: Viewer and Mesh Export](https://www.cadprops.com/jt/index.md)
- [Parasolid X_T and X_B Tools: Viewer, Measurement and STEP](https://www.cadprops.com/parasolid/index.md)
- [ACIS SAT Tools: Viewer, Solids and STEP Conversion](https://www.cadprops.com/acis/index.md)
- [Mesh CAD Formats: STL, OBJ, 3MF, glTF and GLB](https://www.cadprops.com/mesh-formats/index.md)
- [About CADProps: Browser-Based CAD Tools from Singapore](https://www.cadprops.com/about/index.md)
- [Privacy Policy](https://www.cadprops.com/privacy/index.md)
- [Share CAD Models Online](https://www.cadprops.com/share/index.md)
- [Online CAD File Converter](https://www.cadprops.com/convert/index.md)
- [Pricing](https://www.cadprops.com/pricing/)
- [Refund Policy](https://www.cadprops.com/refund-policy/)

HTML page: https://www.cadprops.com/site-map/