CADProps · CAD tools

OBJ Viewer Online: Mesh Dimensions & Surface Area

View OBJ triangle geometry and approximate dimensions, area and closed-mesh volume without an account.

View without an account

Temporary workspace

Capabilities and limits

View OBJ triangle geometry and approximate dimensions, area and closed-mesh volume without an account.
OBJ mesh units need verification; mesh measurements are approximate and volume requires a closed consistent mesh.
Files are uploaded for server processing; support depends on format, version and geometry.
Viewing and measuring do not require an account. Sign in to convert, save files across devices or create share links.

On this page

View OBJ triangle geometry and approximate dimensions, area and closed-mesh volume without an account.

Open your file

View OBJ triangle geometry and approximate dimensions, area and closed-mesh volume without an account. Select or drop the file to start processing immediately. For guests, temporary workspace copies remain limited to the browser session and expire after the configured retention period. Signed-in files are saved to the account library when space is available; otherwise they remain temporary.

What is supported

OBJ coordinates assume millimetres. Geometry is displayed without MTL libraries or textures. B-Rep edge measurement and solid differences are unavailable.

Read the result responsibly

Display units can be changed without changing source geometry. Confirm source units and material density before using physical properties. A preview is not a manufacturing validation.

Input formats: OBJ

Open this tool

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.

Properties — box.obj · 10 × 20 × 30 mm · 6,000 mm³ · 2,200 mm²

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

Original article: CADProps · https://www.cadprops.com/tools/obj-viewer/

A reproducible example

Generated box sample: normalized dimensions 10 × 20 × 30 mm and approximate closed-mesh volume 6,000 mm³. STL/OBJ assume mm; glTF source metres are converted to mm. The ZIP example contains the packaged glTF box.

Repository-generated samples are synthetic test models. Verify your own model's units and geometry before using results.

Supported formats

All formats and limits →

STEP STEP · STPExact B-Rep
IGES IGES · IGSExact B-Rep
VDA-FS VDA · VDAFSDisplay geometry
IFC IFC · IFCZIPMesh
SolidWorks SLDPRTB-Rep when readable
Autodesk Inventor IPTB-Rep when readable
CATIA V5 CATPartB-Rep when readable
Parasolid X_T · X_BExact B-Rep
Siemens NX PRTDisplay geometry
Solid Edge PAR · PSM · ASMDisplay geometry
Autodesk Fusion F3DDisplay geometry
Creo Neutral NEUDisplay geometry
STL STLMesh
GLB GLBMesh
X3D X3D · X3DVMesh
UNV UNVMesh
U3D U3DMesh
PRC PRCMesh
G-code GCODEToolpath lines
AutoCAD DWG · DXF2D view

Questions about this task

How can I view and measure an OBJ file online without an account?

Why are my OBJ textures missing in the viewer?

OBJ coordinates assume millimetres. Geometry is displayed without MTL libraries or textures. B-Rep edge measurement and solid differences are unavailable.

Can I calculate volume from an open OBJ mesh?

No reliable solid volume is available for an open mesh. OBJ measurements are approximate, coordinates assume millimetres, and volume requires a closed, consistently oriented mesh.