FBX Won't Open? Convert to OBJ Instantly
Fast, instant FBX to OBJ conversion. No signup required. Just drop your .fbx file and get .obj in seconds.
Batch Settings
Some metadata may not survive
Your FBX file may contain FBX properties metadata. OBJ has limited or no support for these metadata types. Location data (GPS), camera settings, and color profiles may be stripped during conversion.
3DCGの制作現場では、ソフトウェアをまたいだデータのやり取りが日常的に発生します。AutodeskのFBXはアニメーションや骨格情報を丸ごと保持できる便利な形式ですが、印刷物への落とし込みや軽量な表示用途では、より汎用性の高いOBJが重宝されます。変換の際に気をつけたいのは、マテリアルの対応関係やUV展開の崩れ。事前に確認しておくだけで、後工程の手戻りをぐっと減らせます。このページでは、変換の手順と注意点をまとめました。
- アニメ・ゲーム向けキャラクターモデルの納品データ整理
- 同人誌や設定資料集への3Dモデル掲載用の軽量化
- 建築・プロダクトデザインの社内共有資料作成
国内のゲーム会社やアニメスタジオでは、FBXをメインの入稿形式として採用しているケースが多く、OBJへの変換はむしろ外部への二次利用や印刷入稿時に限定されることが少なくありません。変換後はMTLファイルの文字コードをUTF-8に統一しておくと、日本語パスによる読み込みエラーを防ぎやすくなります。
About FBX to OBJ Conversion
Dealing with a FBX file that won't open on your device? You're not alone — FBX compatibility issues are one of the most common reasons people search for a file converter. FBX is Autodesk's 3D interchange format supporting animation, materials, and skeletal data.
The fix is simple: convert your FBX to OBJ. OBJ is a simple 3D geometry format supporting vertices, faces, and texture coordinates. This conversion lets you convert between formats quickly, solving the problem in seconds rather than hours of troubleshooting.
Full Name: FBX uses Autodesk FBX, while OBJ uses Wavefront OBJ. Compression: FBX uses Lossless, while OBJ uses None (uncompressed). Typical File Size: FBX uses 1–500 MB, while OBJ uses 1–500 MB (text-based, large for complex models). Converting FBX to OBJ maintains high quality with CocoConvert's optimised encoder settings.
CocoConvert processes your FBX file on secure servers in Germany — upload, convert, download. Your files are encrypted via TLS and automatically deleted within 24 hours. No account needed, no software to install, and it works on any device with a browser.
This conversion is ideal when you When you specifically need a OBJ file for your workflow.
The conversion engine behind CocoConvert uses FFmpeg, Sharp, and qpdf — the same open-source libraries trusted by Netflix, YouTube, and enterprise platforms. Pro users can batch convert up to 100 files at once.
How to Convert FBX to OBJ
- 1
Add your FBX file
Drag and drop your .fbx file into the converter, or tap "Browse" to pick it from your device. Multiple files are supported for batch processing.
- 2
Pick OBJ output
Select .obj as the target format. CocoConvert automatically applies the best quality settings for this conversion.
- 3
Start conversion
Hit the Convert button. The 3d model engine processes your file server-side — no CPU drain on your device.
- 4
Save your file
Once done, download your .obj file. For batch jobs, download all at once as a zip.
What Happens When You Convert FBX to OBJ
Your FBX file is decoded and re-encoded as OBJ.
Your FBX file is uploaded and the format is validated
The file content is decoded into its raw representation
The data is re-encoded in OBJ format with optimal settings
The converted file is ready for download
FBX vs OBJ — Detailed Comparison
| Feature | .FBX | .OBJ |
|---|---|---|
| Full Name | Autodesk FBX | Wavefront OBJ |
| Compression | Lossless | None (uncompressed) |
| Typical File Size | 1–500 MB | 1–500 MB (text-based, large for complex models) |
| Platform Support | Very Wide | Very Wide |
| Browser Support | none | none |
| Year Created | 2006 | 1992 |
| Open Standard | No | Yes |
Should You Convert FBX to OBJ?
When to Convert
- ✓When you specifically need a OBJ file for your workflow
Frequently Asked Questions
Why won't my FBX file open?
FBX files may not open if your device lacks the right codec or application. Converting to OBJ — a more widely supported format — usually resolves this. OBJ is a simple 3D geometry format supporting vertices, faces, and texture coordinates.
Is it safe to convert FBX to OBJ online?
Yes. CocoConvert encrypts your file via TLS, processes it on isolated servers in Germany, and permanently deletes it within 24 hours. Your files are never shared or analysed.
Will I lose quality converting FBX to OBJ?
Converting FBX to OBJ maintains high quality with CocoConvert's optimised encoder settings. CocoConvert uses high-quality encoder defaults to preserve as much fidelity as possible.
How large can my FBX file be?
Free users can convert files up to 250 MB each. Pro users get a 5 GB limit per file, and Business API users have custom limits.
Can I convert FBX to OBJ on my phone?
Absolutely. CocoConvert works in any modern browser — iOS Safari, Android Chrome, and all desktop browsers. No app required.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.