# OBJ Viewer Online: Mesh Dimensions & Surface Area View OBJ triangle geometry and approximate dimensions, area and closed-mesh volume without an account. 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](https://www.cadprops.com/workspace/index.md) General steps for uploading, viewing, sectioning, measuring, converting and exporting are explained once in [How it works](https://www.cadprops.com/how-it-works/index.md). 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
Properties — box.obj · 10 × 20 × 30 mm · 6,000 mm³ · 2,200 mm²
[Sample source and verification](https://www.cadprops.com/examples/index.md) ## 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](https://www.cadprops.com/accuracy/index.md) · [Input formats](https://www.cadprops.com/supported-formats/index.md) ## Continue with a related task - [STEP File Dimensions Online: Measure X, Y, Z & Distances](https://www.cadprops.com/tools/cad-dimensions/index.md) - [Batch STEP Properties: Export CAD Measurements to CSV](https://www.cadprops.com/tools/batch-cad-processing/index.md) ## 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. ## Questions about this task ### How can I view and measure an OBJ file online without an account? 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. ### 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. HTML page: https://www.cadprops.com/tools/obj-viewer/