Click the "Select File" button above, and choose your AMR file.
You'll see a preview.
Click the "Convert file to..." button and download the WMA file.
High Quality Conversion
Our advanced conversion technology delivers accurate AMR conversions while preserving quality and integrity of your files.
Secure and Private
Your data is protected by strict privacy policies and access controls. Uploaded AMR files and converted WMAs are deleted immediately after conversion.
Easy to Use
Upload your AMR file to preview it in your browser and download it as a WMA. No registration, watermarks, or software installation required.
AMR to WMA Conversion Explained
Converting .AMR (Adaptive Multi-Rate) to .WMA (Windows Media Audio) changes a highly compressed, speech-optimized mobile audio file into a general-purpose Microsoft audio format. Users perform this conversion to play old mobile voice recordings on legacy Windows devices or to import them into older Windows-based software.
When you convert amr to wma, you gain native compatibility with the classic Windows ecosystem. However, you lose storage efficiency. Because both formats use lossy compression, you also suffer generation loss. This conversion is often a bad idea for modern use cases. If you need to play these files on modern web browsers, Apple devices, or Android phones, converting to .MP3 or .M4A is a much better choice.
Typical Tasks and Users
Archivists: Users recovering old voice memos, call recordings, or MMS audio from legacy feature phones (such as early Nokia or Sony Ericsson models) for playback on a Windows PC.
Transcription Professionals: Typists who receive .AMR files from clients but rely on older, Windows-specific dictation software that only accepts .WMA or .WAV.
Hardware Enthusiasts: Users creating audio CDs or USB playlists for older car stereos and portable media players that support .WMA but cannot decode mobile speech formats.
Software & Tool Support
FFmpeg: The standard open-source command-line tool for decoding .AMR and encoding .WMA.
Audacity: A free audio editor that can open and export both formats, provided the optional FFmpeg library is installed.
VLC media player: A free, cross-platform media player that plays .AMR natively and includes a built-in transcoding tool to output .WMA.
Microsoft Windows Media Player: The native player for .WMA. It cannot read .AMR files without third-party DirectShow codec packs.
Pros and Cons of the Conversion
Pro - Legacy Compatibility:.WMA works natively in older Windows environments, legacy audio editors, and early 2000s hardware players.
Con - Generation Loss: Both formats are lossy. Transcoding from one lossy codec to another permanently degrades the audio data. Since .AMR is already low-quality, the resulting .WMA file will sound slightly worse.
Con - File Size Bloat:.AMR operates at extremely low bitrates (typically 4.75 to 12.2 kbps). Standard .WMA encoding uses 64 kbps or higher. The conversion will increase the file size significantly without adding any audio detail.
Con - Obsolescence:.WMA lacks native support on modern macOS, iOS, and Android devices.
Conversion Difficulties & Why Convert.Guru
The technical pipeline for this conversion requires decoding the narrowband (8 kHz) or wideband (16 kHz) speech codec of the .AMR file into raw PCM audio, and then re-encoding it using the .WMA codec. If the sample rate is not mapped correctly during this process (for example, blindly upsampling 8 kHz audio to 44.1 kHz), the resulting file can introduce high-frequency artifacts or playback speed errors.
Convert.Guru handles this pipeline automatically. It maps the sample rates correctly to prevent audio distortion and applies an appropriate bitrate to minimize unnecessary file size bloat. It provides a reliable, browser-based way to convert amr to wma without forcing users to install command-line tools or outdated codec packs.
Choose .AMR if you are storing thousands of voice recordings and need the absolute smallest file size, or if you are working directly with legacy telecommunications hardware.
Choose .WMA only if you must import the audio into a specific legacy Windows application or play it on an older hardware device that strictly requires Microsoft formats.
Avoid both for general modern use. If you want to share, archive, or play voice memos on current devices, you should convert your .AMR files to .MP3 or .M4A instead.
Conclusion
Converting .AMR to .WMA makes sense strictly for legacy Windows compatibility and older hardware playback. The biggest limitation to watch for is the combination of generation loss and file size bloat; your audio quality will not improve, but the file will take up more disk space. Convert.Guru is a reliable choice for this exact conversion because it correctly handles the sample rate mapping and re-encoding process in the cloud, delivering a playable file instantly.
FAQ
The converter also works in reverse, allowing you to convert your WMA file into AMR file type.
Convert.Guru also easily converts AMR files (Speech Codec Audio) to various formats - free and online. No Media Player or extra software needed.
Convert the AMR locally and export to WMA using Media Player software or a reliable desktop converter — no internet needed. The easiest way is to open the AMR file in the software on your computer and then save it as a WMA file in the File menu under Save as...
About the AMR to WMA Converter
Convert.Guru makes it fast and easy to convert audio files to WMA online. The AMR to WMA converter runs entirely in your browser, so there’s no software to install and no account required. Powered by one of the industry’s largest and most trusted file format databases—maintained for more than 25 years—our technology reliably identifies AMR files even when they are damaged or incorrectly named. Uploaded files are automatically deleted after conversion to protect your privacy.