Free online X to PMX converter
Convert legacy X models to PMX with Blender, MMD Tools, and PMX Editor.
Convert X to PMX online - free
Your file is processed instantly and deleted as soon as you download it.
Import a file from a URL
Paste a direct link to the file. We download it to our server and it is converted exactly like an upload.
How it works
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Upload your .x file
Click to browse to select your file you want to convert or simply drag & drop your file into selected area.
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Perform .x to .pmx conversion
After successful file upload, click to convert when you are ready.
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Download converted .pmx file
Conversion result is ready to download.
How to convert x to pmx file
- 3D modeling
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Source format
X is a legacy 3D model format associated with Microsoft DirectX. It can store mesh geometry, materials, normals, texture coordinates, skinning, and sometimes animation data. X files were common in older Windows game pipelines and are now mostly found in archived or legacy assets.
Target format
PMX is the modern MikuMikuDance model format used for detailed character models. Compared with older MMD formats, PMX supports more advanced bones, vertex attributes, material controls, and model metadata. It is widely used for MMD characters and animation work.
How to convert X to PMX
X to PMX is usually not a direct one-click conversion. The formats belong to different ecosystems, so the safest workflow is to import the X model into a 3D editor, clean it up, and then export to PMX.
- Install Blender and an MMD add-on such as MMD Tools. You can also use PMX Editor for inspection and final fixes.
- Import the X file into Blender. Depending on your Blender version, you may need a DirectX/X importer add-on or a conversion step to an intermediate format such as
.fbxor.obj. - Check the model carefully for missing textures, flipped normals, broken materials, or lost animation data. Legacy X files often need cleanup.
- Prepare the model for MMD use by creating or adjusting the skeleton, fixing bone names, and making sure the mesh follows PMX conventions.
- Export the model as PMX using the MMD add-on’s export option, typically found under File → Export → MikuMikuDance Model (.pmx) or a similarly named PMX export command.
- Open the exported file in PMX Editor to verify bones, materials, morphs, and texture paths, then save the finished
.pmxfile.
Online converters and desktop tools
Direct X to PMX online conversion is uncommon and usually unreliable for textured or rigged models. If you only need a quick format hop, some online converters may handle .x to intermediate formats such as .obj or .fbx, but desktop software is strongly recommended for better control and fewer errors.
Reputable desktop options include Blender for import, cleanup, and export, plus PMX Editor for final validation. If your X file is very old or uses unusual DirectX features, you may need an additional converter before Blender can read it.
Quality limits to expect
Conversion quality depends on the source file. Static meshes are usually easier to migrate than animated or heavily rigged models. Common problems include lost animations, material mismatches, texture path issues, and bone hierarchy differences. PMX also expects MMD-style rigging and naming, so manual adjustment is often necessary.
Always keep a backup of the original .x file and test the result in PMX Editor and, if possible, MikuMikuDance before using it in a project.
X vs PMX: format comparison
How the X and PMX formats compare on the properties that matter most for this conversion.
| Property | .X DirectX model file | .PMX MikuMikuDance PMX model format |
|---|---|---|
| Geometry | Polygon mesh | Polygon mesh |
| Materials | Limited | Yes |
| Textures | Embedded in the file | Embedded in the file |
| Animation | Yes | No |
| Scene hierarchy | Yes | Yes |
| Plain-text readable | No | No |
| Typical file size | Medium | Medium |
| Open standard | No | Partly open |
| Introduced | 1998 | 2008 |
| Developer | Microsoft | Yu Higuchi / community specification for MikuMikuDance models |
Suggested software and links: x to pmx converters
Frequently asked questions
Is the X to PMX converter free?
Yes, converting X to PMX on 101convert.com is completely free. No registration, email address or installation is required. If you need a higher file size limit or want to convert more files at once, see our plans.
How large can my X file be?
You can upload X files up to 50 MB and convert up to 1 files at once in a single batch.
What happens to my uploaded files?
Files are processed automatically and deleted from our servers within a few minutes after conversion. We never view or share your files.
Do I need to install any software to convert X to PMX?
No. The X to PMX conversion runs entirely online in your browser and works on Windows, Mac, Linux, Android and iPhone.
Did the conversion fail?
In most cases, the cause is an incorrect file format. Please upload a valid X file for this X to PMX conversion. Occasionally, the issue may be on our side. We analyze recurring conversion failures and disable or fix the converter if we detect a defect.
Will my X model's textures and materials be preserved in PMX?
Basic mesh materials and texture assignments can be carried over, but advanced DirectX shaders, procedural effects, and some material settings may be flattened or lost. External texture paths can also break if the converter cannot locate the referenced image files.
Are X bones, skin weights, and animations preserved when converting to PMX?
Bones and skin weights may be converted, but bone axes, names, hierarchy, or weighting can change and require checking. Animation clips are generally not stored in the PMX model itself, so they should not be expected to transfer as part of this conversion.
Will an X model with multiple meshes or morphs stay editable in PMX?
The result remains an editable PMX model, but separate meshes, morph targets, and unsupported controller data can be merged, renamed, or omitted. PMX is not a lossless container for every feature that an X file can hold.
Why does my converted PMX model appear white or untextured?
This usually happens because the X file refers to textures by relative or absolute paths that are unavailable or no longer match after conversion. Missing image files, unsupported texture formats, and material settings that have no PMX equivalent can produce the same result.