AMR Won't Open? Convert to SOX Instantly
Fast, instant AMR to SOX conversion. No signup required. Just drop your .amr file and get .sox in seconds.
Batch Settings
还在为手机录音文件（AMR格式）的兼容性发愁吗？尤其是在微信里收到语音，想做点后期处理，却发现很多软件都不支持？别担心，我们懂你的烦恼！AMR作为一种早期的音频编码格式，虽然文件小巧，但在编辑、分享或进行更高级应用时，往往会遇到播放器不识别、编辑软件打不开等问题。而SOX（Sound eXchange）作为一款功能强大的音频处理工具，不仅支持多种音频格式转换，还能进行裁剪、混音等操作。将AMR文件转换为SOX兼容格式，能让你的手机录音焕发新生，无论是专业处理还是日常分享，都变得轻而易举。告别格式壁垒，让你的声音自由流淌！
- 微信语音二次创作
- 游戏配音素材处理
- 移动端录音剪辑
在大陆、台湾和新加坡，AMR格式的语音文件常见于较早期的手机录音和微信语音消息备份。将其转换为SOX兼容格式，能更好地融入到基于PC或更现代移动应用的工作流程中，尤其方便进行进一步的编辑和分享，避免因格式问题造成的障碍。
About AMR to SOX Conversion
Dealing with a AMR file that won't open on your device? You're not alone — AMR compatibility issues are one of the most common reasons people search for a file converter. AMR is a speech-optimised audio codec used in mobile voice recordings.
The fix is simple: convert your AMR to SOX. SOX is a widely used file format. This conversion lets you convert between formats quickly, solving the problem in seconds rather than hours of troubleshooting.
Converting AMR to SOX maintains high quality with CocoConvert's optimised encoder settings.
CocoConvert processes your AMR 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 need a SOX file.
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 AMR to SOX
- 1
Add your AMR file
Drag and drop your .amr file into the converter, or tap "Browse" to pick it from your device. Multiple files are supported for batch processing.
- 2
Pick SOX output
Select .sox as the target format. CocoConvert automatically applies the best quality settings for this conversion.
- 3
Start conversion
Hit the Convert button. The audio engine processes your file server-side — no CPU drain on your device.
- 4
Save your file
Once done, download your .sox file. For batch jobs, download all at once as a zip.
What Happens When You Convert AMR to SOX
Your AMR file is decoded and re-encoded as SOX.
Your AMR file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in SOX format
The converted file is ready for download
Format Comparison
AMR
.amr file
| Extension | .amr |
| MIME Type | audio/amr |
| Category | Audio |
SOX
.sox file
| Extension | .sox |
| MIME Type | audio/x-sox |
| Category | Audio |
Should You Convert AMR to SOX?
When to Convert
- ✓When you need a SOX file
Frequently Asked Questions
Why won't my AMR file open?
AMR files may not open if your device lacks the right codec or application. Converting to SOX — a more widely supported format — usually resolves this. SOX is a widely used file format.
Is it safe to convert AMR to SOX 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 AMR to SOX?
Converting AMR to SOX 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 AMR 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 AMR to SOX 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.