Any3DAny3D

Scale Model

Scale uniformly or to exact dimensions, adjust your model with precision, export directly, no install required.

Loading...

Please wait

About This Tool

This tool lets you scale 3D models right in your browser. You can scale uniformly, stretch along a single axis, or fit the model to exact target dimensions. It works well for 3D printing and game development, and the scaled model can be exported as STL, OBJ, or GLB with original details preserved. Since all processing happens locally, your files never leave your device.

Tips

  • 1Supports STL, OBJ, and GLB, the formats you already use.
  • 2Scale by percentage or set exact length, width, and height values.
  • 3Files are processed locally in your browser, so nothing is uploaded.

About Configuration Options

General Settings

Transform Application

DefaultModify root node

Choose how the transform is applied to the model: by modifying vertices (baked into geometry data) or by modifying the root node transform. Modifying vertices rewrites all vertex coordinates and applies consistently to every export format; modifying the root node keeps the original vertex coordinates, which is friendlier to animated, skinned, or geometry-sensitive workflows. Root node transform is the recommended default.

Modify vertices

The transform is written into all vertex coordinates, rewriting geometry data; applies consistently to every export format.

Modify root nodeRecommended

The transform is written to the root node (position/scale/rotation) while vertex coordinates stay unchanged; friendlier to animated or skinned models, but formats that ignore node transforms (such as STEP) won't apply it. Recommended default.

Scale Model

Scale mode

DefaultUniform

Uniform, single-axis, or target max-dimension scaling. Baked into vertices.

UniformRecommended
Single Axis
Target Size

Scale Factor

Default2×

Range0.1× – 10× · step 0.1×

Scale multiplier used in uniform and single-axis modes.

Target Max Dimension

Default100

Range0.01 – 10000 · step 0.1

Scale the model so its longest edge matches this size (model units).

Axis

DefaultX

Axis used in single-axis scale mode.

X
Y
Z

Format Information

Input / Output

Extension:
Model
Full Name:
3D Model
Type:
3D Model
Format:
Various 3D Formats
Tools:
Three.js、Babylon.js
Open With:
Windows 3D Viewer、Blender
Description:
Supports many 3D formats (GLB, GLTF, OBJ, FBX, STL, etc.). Drag and drop to view.

Notes:

  • Supports 20+ 3D model formats
  • Associate texture files (MTL, images) can be uploaded alongside the main model
  • All processing is local, so files never leave your browser

Supported Features:

  • Real-time GPU-accelerated rendering via WebGL
  • Orbit controls: rotate, pan, zoom
  • Wireframe and shaded display modes
  • Model info panel with vertex/face counts
  • Animation playback for animated formats

How to Use

1

Upload Model

Drag and drop or browse for your 3D file

2

Apply Transform

Use the sidebar panel to apply the desired operation

3

Preview

Rotate and inspect the result in the 3D viewer

4

Export

Choose output format and download the transformed model

Frequently Asked Questions

View all FAQs

About this tool

Q

Will my model get distorted after scaling?

A

Uniform scaling keeps the shape intact. Single-axis scaling stretches the model, which is useful when you want to change the aspect ratio. Details are preserved after scaling, but very large scale changes can reduce precision.

Q

How do I scale to exact real-world dimensions?

A

Choose target dimensions and enter the length, width, and height values. The tool automatically calculates the scale factor. Make sure the model's unit matches the unit you enter, such as millimeter or inch.

Q

Which file formats are supported?

A

Currently STL, OBJ, and GLB are supported. If your model has textures, upload the accompanying texture files, such as .mtl or images, and the textures will be preserved after scaling.

Q

Can the scaled model be used for 3D printing?

A

Yes. After scaling, export the model as STL and it is ready for 3D printing. Before scaling, check that the model is watertight and free of holes so the print succeeds.

Q

My STL has no unit info. Is it in millimeters or inches?

A

STL stores raw numbers without an explicit unit, so the size depends on what you assume. If a print comes out 25.4 times too big or too small, the model was created in the other unit. Scale it by 25.4 or 1/25.4 to convert.

Q

What is the difference between uniform, axis, and target-size scaling?

A

Uniform scaling applies one factor to all three axes. Axis scaling changes only the selected axis and stretches the shape. Target-size scaling resizes the whole model proportionally so that its largest dimension equals the value you enter.

General questions

Q

Is Any3D completely free?

A

Yes, Any3D's core features are free to use forever. We provide format conversion, model optimization, and online preview at no cost, with no registration required.

Q

Are my files uploaded to your servers?

A

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.

Q

Do I need to install software?

A

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.

Q

Is there a file size limit?

A

The processing capacity depends on your device performance and the model's vertex count and texture complexity, rather than file size alone. We impose no file size limit, but when a model exceeds what your device can handle, the page may lag or even crash.

Support Us