Mixamo to VRM converter — rig preserved

VTubeMe's Mixamo to VRM converter turns a rigged Mixamo FBX into a VTubing-ready VRM online, mixamorig: bones mapped to the VRM humanoid. You only pay for successful conversions.

Credits: …
Other converters:Animation → VRMAVRM → FBXVRM 1.0 ↔ 0.x

A Mixamo animation is not a Mixamo character

The converter maps the humanoid bones, carries the materials and textures over and shows the result in a 3D preview before download. Mixamo's auto-rigger writes one of the most predictable skeletons there is, every joint under the mixamorig: namespace, and that naming is the one this converter was built around.

Mixamo hands out two different things, and only one of them can become a VRM. A character download carries the mesh; a motion clip carries a skeleton and nothing else. Drop a clip into the model converter and the answer is NO_MESH — “The file contains a skeleton but no mesh” — because there is no avatar in the file to convert.

If the motion is what you wanted, that is a different converter, not a different site: the FBX to VRMA converter takes the same clip. It is retargeted onto the VRM humanoid, so the resulting .vrma plays on any VRM avatar, and you can preview it on a sample model before downloading.

When you do want the character, download it with skin and pick FBX Binary in Mixamo's export dialog — an ASCII FBX has to be re-exported as binary before any of this works.

No rig yet? Mixamo is also the fix

A VRM needs bones, so a static mesh cannot become one — that failure is NO_ARMATURE, and it is common with game-character rips and AI-generated models. The free way out is the same site this page is about: upload the mesh to Mixamo, let it auto-rig, download the result as FBX Binary and convert that. The rig it produces is exactly the naming described below.

Mixamo bone names the converter maps

The mixamorig: prefix comes off before anything is matched, so these rows apply whether your file spells the bone mixamorig:Hips, mixamorigHips (what three.js makes of the same FBX) or plain Hips. Left side shown; the right side is identical.

Mixamo boneVRM humanoid bone
mixamorig:Hipships
mixamorig:Spinespine
mixamorig:Spine1chest
mixamorig:Spine2upperChest
mixamorig:Neckneck
mixamorig:Headhead
mixamorig:LeftArmleftUpperArm
mixamorig:LeftForeArmleftLowerArm
mixamorig:LeftHandleftHand
mixamorig:LeftUpLegleftUpperLeg
mixamorig:LeftLegleftLowerLeg
mixamorig:LeftFootleftFoot

Beyond the trunk and limbs, LeftShoulder and RightShoulder take the VRM shoulder slots, LeftToeBase and RightToeBase the toes, and all five finger chains resolve — LeftHandThumb1 through LeftHandThumb3 become the thumb's proximal, intermediate and distal joints, and the same shape holds for index, middle, ring and pinky. Both spellings of the rig — with the colon and with the prefix fused into the name — are verified on real files in our regression corpus, so a skeleton that maps here maps the same way in the browser preview. When a conversion succeeds, the result panel names what it saw: “mixamo rig”.

What can go wrong with a Mixamo file

A conversion that cannot finish tells you which of these it hit, and returns the credit — you are never charged for a failure.

RIG_WITHOUT_MESH

The file contains a skeleton but no character — you exported a motion clip, not a model.

Take the offered 'Convert it as an animation' button, or re-download the character with skin if the model was the point.

IMPORT_FAILED

The FBX could not be read at all; ASCII FBX is the usual cause.

Re-export as binary FBX — every 3D tool has the option, and Mixamo's own dialog offers 'FBX Binary'.

NO_TEXTURES

The rig converted, but every texture the file asks for is missing, so the model would come out grey. A model file does not contain its textures — it only points at them by filename.

Put the FBX and its texture folder into one .zip and convert that. The credit is returned either way.

NO_ARMATURE

There is no rig in the file — it is a static mesh, and a VRM needs bones.

First check whether the model had a rig that the export dropped — the original beats a generated one and usually carries the face. Otherwise run it through Mixamo's auto-rigger, download as FBX Binary and convert that; auto-rigging moves a body, it does not create expressions.

Frequently asked questions

How do I convert a Mixamo character to VRM?

Download your character from Mixamo as FBX Binary with skin, drop the file into the converter on this page, and the mixamorig: skeleton is mapped onto the VRM humanoid while the materials and textures come along — usually in under a minute. Preview the result in 3D and download the .vrm; it loads directly in VSeeFace, Warudo and VNyan. Your first conversion is free, and a rig that cannot be mapped refunds automatically instead of charging you.

Can I use a Mixamo animation on a VRM avatar?

Yes, but through the other converter: a Mixamo motion clip has no mesh, so it is not a model conversion. Drop the clip into the FBX to VRMA converter — the motion is retargeted onto the VRM humanoid, so one converted .vrma plays on any VRM avatar, not just the character you exported it with. Open the FBX to VRMA converter →

Why does my Mixamo FBX say RIG_WITHOUT_MESH?

Because the file is an animation, not a character: it carries a skeleton and no geometry. Mixamo lets you download a clip on its own, and that download looks identical from the outside. The converter recognises the shape and offers to convert it as an animation on the spot — no re-upload — or you can re-download the character with skin if the model was what you wanted.

Do I have to rename the mixamorig: bones first?

No. The namespace is stripped before any name is matched, and the same rig read by different tools — Blender keeps the colon, three.js fuses it into 'mixamorigHips' — resolves identically. Rename nothing; upload the file as Mixamo gave it to you.

Is there a free Mixamo to VRM converter?

Your first conversion here is free, with nothing to install. After that it is credit packs, and a credit is only spent on success — failures refund automatically, and a result that looks wrong in the 3D preview can be refunded self-serve before you download it. Fully free desktop routes exist too: Blender with the VRM Add-on, or Unity with UniVRM, both with the bone and material work done by hand. The three routes, compared →

The VRM converted but VSeeFace will not open it — what now?

That is usually a version mismatch rather than a broken file: VSeeFace reads VRM 0.x only, while Desktop Mate's avatar loader wants 1.0. The version converter reads a file's own version and rewrites it to the other one, carrying humanoid bones, expressions, look-at, spring bones and MToon materials across. Open the VRM 1.0 ↔ 0.x converter →

MMD model instead?

Japanese bone names are read as they are, and .pmx is read directly.

Character Creator, AccuRig or ActorCore?

CC_Base_ bones are mapped and limb twist bones folded in.

Every other input format

The same converter takes FBX, GLB, glTF, .blend and Sketchfab-style ZIPs.

No 3D model at all?

Create a photorealistic VRM avatar from a single selfie instead.

No model of your own yet? VTubeMe is also a VTuber maker: upload one selfie and get a rigged VRM avatar.

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