Online CAD Tools: Viewers, Measurement & Calculators
Explore CAD and mesh viewing, DWG previews, dimensions, visual comparison and batch CSV export.
Tools & format notes
23 tools
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STEP viewer
Open STEP and STP files in a real 3D viewer. Inspect parts, units and geometry properties without an account.
Take a closer look →ViewingIGES / IGS viewer
Inspect IGES surfaces and solids using Open CASCADE. Read dimensions and surface area; volume and mass require valid closed solids.
Take a closer look →ViewingSTL viewer
Open binary or ASCII STL files, inspect the triangle mesh and estimate dimensions, area and closed-mesh volume.
Take a closer look →PropertiesWeight calculator
Estimate mass from valid STEP solid volume and your chosen material density. Inspect the model, verify units and download a property CSV without an account.
Take a closer look →PropertiesVolume calculator
Calculate solid volume from STEP B-Rep geometry. Check model validity, source units and assembly scope before using or exporting the result.
Take a closer look →PropertiesDimensions & measure
Check STEP bounding dimensions in source coordinates and pick approximate point distances in an interactive 3D viewer. Source units are normalized to millimetres.
Take a closer look →PropertiesSurface area
Calculate surface area from STEP geometry, inspect individual parts and export the result in mm². Keep open surfaces and solid-volume requirements distinct.
Take a closer look →ComparisonCompare two files
Compare two 3D models visually and inspect their properties. STEP pairs additionally support automatic solid differences.
Take a closer look →BatchBatch CAD processing
Process a batch of STEP files and export real dimensions, area, volume and density-based mass as CSV.
Take a closer look →ViewingOBJ viewer
View OBJ triangle geometry and approximate dimensions, area and closed-mesh volume without an account.
Take a closer look →Viewing3MF viewer
Inspect 3MF core triangle geometry with declared units and repeated component instances.
Take a closer look →ViewingGLB viewer
Open a static GLB model and inspect geometry, base colors, scene instances and approximate dimensions.
Take a closer look →ViewingGLTF viewer
View static glTF 2.0 geometry. Upload embedded resources directly, or package local buffers and images in a ZIP.
Take a closer look →ViewingZIP CAD package viewer
Upload a ZIP containing supported CAD models or a glTF scene with its local resources, then inspect the package in one workspace.
Take a closer look →ViewingDWG 2D viewer
Preview DWG model-space drawings with fit, pan and zoom using the LibreDWG reader. Compatibility depends on drawing content.
Take a closer look →Not availableSolidWorks viewer
SolidWorks viewer is not available in this release. Read the format notes and ask your sender for a self-contained STEP file.
Read the notes →Not availableNX viewer
NX viewer is not available in this release. Read the format notes and ask your sender for a self-contained STEP file.
Read the notes →Not availableParasolid viewer
Parasolid viewer is not available in this release. Read the format notes and ask your sender for a self-contained STEP file.
Read the notes →Not availableSolidWorks to STEP
SolidWorks to STEP is not available in this release. Read the format notes and ask your sender for a self-contained STEP file.
Read the notes →Not availableNX to STEP
NX to STEP is not available in this release. Read the format notes and ask your sender for a self-contained STEP file.
Read the notes →Not availableSTEP to STL
STEP to STL is not available in this release. Read the format notes and ask your sender for a self-contained STEP file.
Read the notes →Not availableParasolid to STEP
Parasolid to STEP is not available in this release. Read the format notes and ask your sender for a self-contained STEP file.
Read the notes →Not availableCAD to GLB
CAD to GLB is not available in this release. Read the format notes and ask your sender for a self-contained STEP file.
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