WMA to AAC Converter
Convert WMA (Windows Media Audio) files to AAC format for Apple devices and streaming platforms. Powered by FFmpeg WebAssembly for private, browser-based conversion.
Drop your audio file here
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Complete Guide: WMA to AAC Converter
Everything you need to know about using this tool effectively
The WMA to AAC Converter decodes Windows Media Audio files and re-encodes them as AAC. AAC is the standard audio format for Apple devices, YouTube, and most modern streaming platforms, offering excellent quality at smaller file sizes. All conversion runs in your browser using FFmpeg via WebAssembly.
WMA (Windows Media Audio) is a proprietary Microsoft codec with poor support outside Windows. AAC (Advanced Audio Coding) is the successor to MP3 used natively by Apple devices, Android, and all major streaming services. This tool uses FFmpeg to decode WMA and produce an AAC file compatible across all modern platforms.
Play WMA files on iPhone or iPad
Convert WMA recordings to AAC for native playback on Apple devices without any third-party apps.
Upload to streaming platforms
YouTube, Spotify, and Apple Music all accept AAC audio. Convert WMA files to AAC before uploading.
Smaller file sizes than WAV
AAC compresses audio efficiently, producing files much smaller than WAV while maintaining good quality. Ideal for storage-limited devices.
Better quality than MP3 at low bitrates
For voice recordings at 64–96 kbps, AAC generally sounds better than MP3. Convert WMA voice memos to AAC for efficient storage.
Migrate Windows Media libraries to Apple ecosystem
If you are moving from Windows to macOS or iOS, convert your WMA library to AAC for native compatibility.
Upload WMA file
Click to browse or drag and drop your WMA file into the upload area.
Wait for FFmpeg to load
On first use, the FFmpeg WebAssembly binary loads from a CDN. This takes a few seconds.
Convert
Click Convert to AAC. FFmpeg decodes the WMA and the browser encodes the output as AAC.
Download AAC
Download your AAC file for use on Apple devices, Android, or any modern media player.
AAC encoding in this tool uses the WebCodecs API and is available on Chromium-based browsers (Chrome, Edge, Brave).
For editing, convert to WAV first to avoid stacking lossy compression.
WMA files with DRM cannot be converted by this tool.
AAC at 128 kbps is suitable for most music. Voice recordings can use 64 kbps.
Keep your original WMA files as backup after conversion.
Is AAC better than WMA?
AAC has significantly broader device and platform support. At comparable bitrates, AAC generally achieves similar or better quality. AAC is the more practical choice for modern use.
Does converting WMA to AAC lose quality?
Yes. Both are lossy formats. Transcoding between them applies a second round of compression and causes some quality loss. Start from the highest quality WMA available.
Are my files uploaded to a server?
No. FFmpeg runs in your browser via WebAssembly. Your files are processed locally.
Can I convert WMA files with DRM?
No. DRM-protected WMA files cannot be decoded by this tool.
Why does AAC encoding require Chrome?
AAC encoding uses the WebCodecs API which is currently only available in Chromium-based browsers. Firefox users should convert to MP3 or OGG instead.