Free Online Audio Format Converter
Convert local audio files between common and niche formats with adjustable sample rate, bitrate, and bit depth — all processed privately in your browser.
Your audio stays in this browser. Files are not uploaded to any server.
Supported import & export formats
Additional import-only formats
Game, tracker & niche import formats
No files added yet. Drop audio above to start.
Support depends on available in-browser WASM decoders. If decoding fails, try another source format such as WAV or MP3.
Convert audio files locally in your browser. MP3, WAV, OGG, FLAC, game audio (WEM, ADX, VAG, MOD), and more — adjust sample rate, bitrate, and bit depth with private WASM processing.
Private in-browser audio conversion
Convert audio files locally without uploading them. This tool uses WebAssembly codecs in your browser for MP3, WAV, OGG, FLAC, M4A, Opus, AIFF, WebM, WMA, and AC3 export.
Supported input and output formats
Import and export: MP3, WAV, OGG, FLAC, M4A/AAC, Opus, AIFF, WebM, WMA, and AC3. Additional import support for game audio (WEM, ADX, VAG, MOD, MIDI, VOC), mobile legacy containers (AMR, 3GP, CAF), and niche codecs when WASM decoding is available.
How to convert audio files locally
Add files, pick a target format, set sample rate above the fold, then open bitrate and bit-depth options for lossless exports. Convert and download each result individually.
Common conversion use cases
Popular workflows include game audio (WEM/ADX/VAG to MP3), tracker modules (MOD/XM to WAV), MP3 to WAV, WAV to MP3, FLAC to M4A, and cross-format conversion for editing, sharing, or archiving.
Why local WASM processing helps
Because decoding and encoding happen on your device, your media is not sent to a remote transcoding service. Results stay consistent across platforms.
Limitations and niche formats
Game and niche formats can be imported when a browser decoder is available but are not offered as export targets. Some proprietary containers may still fail with a clear per-file error.
Frequently Asked Questions
Are my audio files uploaded to a server?
No. All decoding and encoding runs in your browser with WebAssembly. Your files never leave your device.
Which formats can I import and export?
You can import and export MP3, WAV, OGG, FLAC, M4A/AAC, Opus, AIFF, WebM, WMA, and AC3. Game and niche formats such as WEM, ADX, VAG, MOD, MIDI, VOC, APE, and DTS can be imported and converted to any export format.
Can I change sample rate, bitrate, or bit depth?
Yes. Sample rate is available on the main panel. Open bitrate and quality options to set MP3/AAC/Opus bitrates, OGG quality, and 16/24/32-bit depth for WAV, FLAC, and AIFF exports.
Why did my file fail to convert?
Some proprietary or legacy formats lack stable in-browser decoders. Try converting from a common source format such as WAV or MP3.
Can I convert multiple files at once?
Yes. Add several files, choose export settings once, and convert them sequentially with per-file status and individual downloads.
Is this tool free?
Yes. The converter is free to use with no account required.