ToolRecipe

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Drop a file here

or .

Open an app

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OBJ to FBX

Convert OBJ to FBX online, free and without signing up. Drop in the OBJ file, set the units, scale and up axis, and save the FBX file. Nothing is uploaded: your browser reads and writes the model on your device.

How to convert OBJ to FBX

  1. 1Drop your OBJ file in, or click to choose it
  2. 2Check the units, the scale and the up axis
  3. 3Press Convert and save the FBX file
  4. A FBX file with your model, in the size you set.

What happens to your files

  • Nothing is uploaded.Your OBJ file is read and the FBX file is written by your browser, on your own device.
  • Checked after writing.The new file is read back, and anything that did not make it across is listed.
  • Units and axes are yours.Set the units, a scale and the up axis before you save.

What you can do

  • Convert OBJ to FBX with one tool: choose the units, a scale factor and the up axis (Z-up or Y-up) before you save.
  • See the size the model will have in the new file, and a list of what the new format cannot hold, before you convert.
  • Merge all parts into one mesh, or apply transforms so the positions are baked into the vertices.
  • Look at the model in the preview first. Drop the companion files (.mtl, .bin, textures) or a ZIP together with it.

Good to know

  • OBJ is a plain-text format from Wavefront for shapes, with materials in a separate .mtl file. It has no unit and no animation, and PBR maps are dropped.
  • FBX is Autodesk's format for game engines and animation tools. It holds meshes, materials, bones and animations, and is written in centimetres here.
  • STL, OBJ and PLY have no unit, so you choose one. 3MF is written in millimetres, FBX in centimetres and the other formats in metres.
  • Not every format holds everything. STL keeps only the shape, PLY has no textures, and DAE leaves animations out. The page lists this before you save.
  • A glTF or OBJ result is saved as a ZIP with the .bin or .mtl file and the textures next to the model.
  • FBX, 3MF and DAE are written by a 7 MB add-on that loads once, from ToolRecipe itself, the first time you pick one of them.

Questions

Is OBJ to FBX free, and is my file uploaded?

It is free, and there is no sign-up. The file is not uploaded: your browser does the conversion on your device.

Does the model keep its size?

Yes, when the file states its unit, it is carried across. If it does not, you say which unit the numbers are in. The size in the new file is shown before you save.

Why is my model turned in the new file?

Some formats are Z-up (STL, 3MF) and others Y-up (GLB, USDZ, FBX). By default the model is turned to suit the pair. Change "Up axis" to keep it as it is.

What gets lost when I convert OBJ to FBX?

It depends on the two formats. The page lists what the new format cannot hold before you save, and checks the new file after writing.

How it works

Small tools that run in your browser.

Four steps

  1. Start with a file or a task

    Drop a file, search, or pick a task.

  2. The tool opens in a window

    Open as many as you like, side by side as tabs.

  3. Results collect on the right

    Drag a result into the next tool.

  4. Save when you're done

    Saved files go to your downloads.

Who uses what

Tool sets for common jobs.

Put a tool on your home screen

The icon opens that tool, like an app.

iPhone and iPad

  1. Open the tool in Safari.
  2. Tap Share (the square with the arrow).
  3. Choose “Add to Home Screen”, then Add.

Android

  1. Open the tool in Chrome.
  2. Tap the menu (⋮) at the top right.
  3. Choose “Add to Home screen” or “Install app”.

Computer

  1. Open the tool in Chrome or Edge.
  2. Click the install icon in the address bar.
  3. Choose Install.

Skills

Claude skills we use ourselves, one job each.