Free audio conversion
FFmpeg WASM–based audio conversion when the vendor bundle is available.
Add audio files
Drag & drop files or browse to enqueue many jobs. FFmpeg WASM processes them sequentially in your browser.
Drag audio here or browse
AAC · MP3 · FLAC · M4A · OGG · WAV · WMA · MP4 · WebM
Select audio files.
Run conversion
Set per-file format and advanced options from each row’s options button.
Conversion queue
Queued files appear below. Download items individually or bundle completed outputs into a ZIP.
FAQ
Is audio converted on a server?
No—when the FFmpeg WASM bundle is present everything runs locally in your browser.
Can I convert many files at once?
Yes. Files stack in the queue and finished exports can be zipped together.
Does WMA always work?
Support depends on your FFmpeg WASM build. If WMA fails, try MP3, WAV, or FLAC outputs.
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Converting…
We are processing audio locally in your browser.
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Preparing FFmpeg…
Engine loading
Preparing files
Converting audio
Packaging results