AMR vs WMA — Comparison & Free Converter
Fast, instant AMR to WMA conversion. No signup required. Just drop your .amr file and get .wma in seconds.
Batch Settings
Generation loss — quality may degrade
AMR uses lossy compression, and so does WMA. Converting means decoding and re-encoding — each cycle can permanently degrade quality. Convert from the original source file whenever possible.
What compression artifacts to expect
WMA lossy compression can produce smearing, loss of high-frequency detail. At the high quality settings CocoConvert uses by default, these are usually invisible to the eye. Lower quality settings trade visual fidelity for smaller file sizes.
您是否曾遇到过这样的情况：手机里有些珍贵的语音备忘录是AMR格式，却发现无法在电脑上播放，或者想分享给朋友却担心他们打不开？AMR作为一种早期的移动设备录音格式，在兼容性方面确实有所局限。而WMA，作为微软推出的一种音频格式，在Windows系统和许多播放器上都有着更好的兼容性。将AMR转换为WMA，不仅能让您的音频文件在更多设备上流畅播放，还能方便地进行编辑和分享。我们的在线工具，正是为了解决您的这些烦恼而设计。无需下载安装任何软件，只需简单几步，就能轻松完成转换，让您的语音文件焕发新生。
- 微信语音转发
- 游戏背景音乐
- 手机录音备份
在华语地区，由于早期功能机的普及，AMR格式在长辈的手机录音中尤为常见。将其转换为WMA，能更好地适应智能手机和电脑的播放环境，方便家人间的分享与保存。
About AMR to WMA Conversion
AMR or WMA — which format should you use? The answer depends on your needs. Here's a quick breakdown.
AMR is a speech-optimised audio codec used in mobile voice recordings. It has limited platform support. WMA (Windows Media Audio) is Microsoft's audio codec — less common today but still found in legacy collections. It has limited platform support.
Full Name: AMR uses Adaptive Multi-Rate Audio, while WMA uses Windows Media Audio. Compression: AMR uses Lossy, while WMA uses Lossy. Typical File Size: AMR uses 0.1 MB per minute (extremely compressed), while WMA uses 1 MB per minute at 128 kbps.
So when should you convert AMR to WMA? This conversion is ideal when you When you specifically need a WMA file for your workflow. This conversion helps you convert between formats quickly.
AMR uses lossy compression, and so does WMA. Converting means decoding and re-encoding — each cycle can permanently degrade quality. Convert from the original source file whenever possible. Common misconception: ""I'll convert to WMA and then back to AMR — it'll be the same"" — in reality, each lossy conversion cycle permanently degrades quality. going amr → wma → amr will produce a noticeably worse file than the original. always keep your source file.
If you've decided WMA is the right choice, CocoConvert makes the conversion effortless. Upload your .amr file, pick WMA, and click Convert — done in seconds. The converter runs on secure servers in Germany, powered by FFmpeg, Sharp, and qpdf. Files are encrypted via TLS and erased within 24 hours.
Free tier: 5 files/hour, 250 MB each. Pro: 100 files/hour, 5 GB each. Works in every modern browser on desktop and mobile.
How to Convert AMR to WMA
- 1
Choose your AMR file
Upload your .amr file using drag-and-drop or the file browser. Batch mode lets you add multiple files.
- 2
Set format to WMA
Select .wma from the output options. The converter applies optimal quality settings automatically.
- 3
Run the conversion
Click Convert. Server-side processing means your device stays fast — even for large audio files.
- 4
Get your WMA file
Download your converted file instantly. Batch downloads are available as a zip archive.
What Happens When You Convert AMR to WMA
Your AMR audio is decoded into raw PCM samples, then re-encoded as WMA. Some audio data is permanently discarded during compression.
Your AMR file is decoded — compressed audio becomes raw PCM waveform data
The raw audio is re-encoded using Windows Media Audio's lossy codec
Metadata (tags, artwork, track info) is transferred where WMA supports it
The WMA file is saved and ready for download
AMR vs WMA — Detailed Comparison
| Feature | .AMR | .WMA |
|---|---|---|
| Full Name | Adaptive Multi-Rate Audio | Windows Media Audio |
| Compression | Lossy | Lossy |
| Typical File Size | 0.1 MB per minute (extremely compressed) | 1 MB per minute at 128 kbps |
| Platform Support | Limited | Limited |
| Browser Support | none | none |
| Year Created | 1999 | 1999 |
| Open Standard | Yes | No |
Should You Convert AMR to WMA?
When to Convert
- ✓When you specifically need a WMA file for your workflow
When NOT to Convert
- ✗You're converting just because the file "seems old" — re-encoding lossy-to-lossy always degrades quality
Common Mistakes When Converting AMR to WMA
"I'll convert to WMA and then back to AMR — it'll be the same"
Each lossy conversion cycle permanently degrades quality. Going AMR → WMA → AMR will produce a noticeably worse file than the original. Always keep your source file.
Frequently Asked Questions
Should I use AMR or WMA?
It depends on your goal. AMR offers smaller files via lossy compression. WMA offers smaller files via lossy compression. Choose based on whether file size or quality matters more for your use case.
Is WMA higher quality than AMR?
Not necessarily. AMR uses lossy compression, and so does WMA. Converting means decoding and re-encoding — each cycle can permanently degrade quality. Convert from the original source file whenever possible. Quality depends on the compression type and settings, not just the format name.
Can I convert AMR to WMA on Mac and Windows?
Yes. CocoConvert is a web-based tool that works in all modern browsers — Chrome, Safari, Firefox, Edge — on any operating system including macOS, Windows, Linux, iOS, and Android.
Is CocoConvert free for AMR to WMA?
Yes. Free users get 5 conversions per hour (250 MB each). Pro subscribers unlock 100 files per hour, 5 GB per file, and priority processing.
What tools does CocoConvert use for AMR to WMA?
CocoConvert uses FFmpeg for audio/video, Sharp for images, and qpdf for documents — the same open-source libraries used by Netflix, YouTube, and major enterprise platforms.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.