Upload a model, click to place points, and measure length, angle, area, or volume. Snap to vertices, edge midpoints, or face centers; choose straight or surface distance, planar or surface area; results update live in your preferred unit.
or click to browse, paste supported
After the model loads, select a measure mode and click on the surface to place points: finish length and area drafts with right-click or Enter, complete an angle with the third point, or select one or more mesh parts for volume and confirm. Snap can target vertices, edge midpoints, and face centers, with the tolerance adjustable in the current unit. Surface distance and surface area work only within the same mesh part and fall back to straight or planar results when they fail; up to 50 measurements are kept. Export the current view as an image, or a PDF report with a screenshot and measurement table.
Drag and drop STL, GLB, OBJ, FBX, 3MF, PLY, or STEP
Click the model for length, angle, or area; select mesh parts for volume
Check the results in the list, then export an image or PDF
| Option | What it does | Default / range |
|---|---|---|
Mode | Measure polyline length, three-point angle, polygon area, or mesh part volume. Length · Angle · Area · Volume | Length |
Distance Type | Straight measures the Euclidean distance in space; surface follows an approximate path along the mesh.
| Straight |
Area Type | Planar calculates the polygon area on the best-fit plane; surface approximates the curved area under it.
| Planar |
Show Supplementary Angle | Also display 180° minus the measured angle. | Off |
| Option | What it does | Default / range |
|---|---|---|
Hide Occluded Measurements | When on, measurements hidden behind the model are completely invisible. When off, occluded parts are shown dashed with semi-transparent points. | Off |
| Option | What it does | Default / range |
|---|---|---|
Enable Snap | Snap picks to mesh keypoints within the tolerance radius. | On |
Vertex | Snap to the nearest vertex. | On |
Edge Midpoint | Snap to the nearest edge midpoint. | On |
| Option | What it does | Default / range |
|---|---|---|
Face Center | Snap to the center of triangle faces. | On |
Tolerance | Snap search radius in the current length unit. Larger values make it easier to hit keypoints. | 10.001 – 1000 · step 0.01 |
| Option | What it does | Default / range |
|---|---|---|
Clear All | Deletes every finished measurement and resets the current draft. | |
Visibility | Hides or shows a single measurement in the scene while keeping it in the list. | |
Delete | Removes a single finished measurement from the list. | |
Limit | Keep up to 50 measurements at once. When the limit is reached, delete some items before adding more. | |
Hide / Show All | Hides or shows every measurement in the scene with one click while keeping them in the list. |
| Option | What it does | Default / range |
|---|---|---|
Screenshot | PNG image of the current view with visible measurements. | On |
PDF Report | PDF file with a screenshot and a table of measurements. | On |
About this tool
No. Upload only loads the preview. Every measurement requires your input: place points for length, angle, and area, or select mesh parts for volume. Nothing is added to the list until you finish a draft.
With snap enabled, each click finds the nearest vertex, edge midpoint, or face center within the tolerance radius. You can toggle each snap target, set the tolerance in the displayed unit, hold Alt to temporarily disable snap, or hold Shift to temporarily increase the radius.
Straight distance is the shortest chord between two points in space and does not follow the model. Surface mode finds a shortest path along the mesh edge graph so the polyline hugs the surface; it only works within the same mesh part and falls back to straight if it fails.
Switch to angle mode, click the vertex first, then one point on each of the two edges. The scene shows the two legs, an arc, and the angle value. You can enable Show supplementary angle to also see 180° minus the measured angle.
Planar area projects the polygon onto a best-fit plane and is suitable for roughly flat regions. Surface area sums the triangular faces under the footprint and is better for curved surfaces; in surface mode the edges also try to follow the model surface.
Volume is computed as signed tetrahedral sum over the mesh parts you select. Open or non-manifold meshes may give only an estimate. Multi-part models are summed for the selected parts only after confirmation; nothing is measured automatically.
Yes. On a finished length, angle, or area measurement, drag any measure point to re-snap and update the result live. Scene rotation is temporarily disabled during drag and resumes when you release. Note: dragging a point on a surface measurement converts the surface path back to straight; delete and re-measure if you need the surface path.
The image captures the current 3D view with visible measurement annotations. The PDF generates a short report with the screenshot, source file name, unit, and a table of all measurements. You need at least one measurement to export the PDF.
After the model loads, the tool briefly prepares point picking, and the preview shows a "Preparing pick acceleration" overlay in the meantime. Denser meshes take longer; once the overlay clears, you can pick points as usual.
By default, occluded parts show as dashed lines and semi-transparent points, so you can verify annotations from any angle. Enable Hide occluded measurements to completely hide occluded lines, points, area fills, and value labels.
No. The unit only affects the numeric display: length, area, and volume use suffixes like mm, mm², and mm³. The stored points and real dimensions remain unchanged. The snap tolerance converts together with the unit, keeping the physical snap radius the same.
You can keep up to 50 measurements at once. When you reach the limit, delete or clear some items before adding more. Individual items can be hidden or deleted, and you can hide or show all items with one click.
General questions
Core features are free forever. Format conversion, model optimization, and online preview do not require an account. Some advanced features are paid.
No. Files you select are processed only in your browser on this device, so they never leave your device and are never sent to our servers. We don't store any user files; after processing, related data in browser memory is released.
No installation required. Any3D is entirely browser-based; just open the webpage to use all features. It works on Windows, Mac, Linux, and other major operating systems.
There is no cap on file size or polygon count. How large a model you can open depends on your device's memory and graphics card, and very heavy models may make the page lag or crash. Some tools do limit how many files go in at once, such as 50 models per batch or single images up to 50 MB in texture compression. See Limits for the full list.
