Which input formats are supported?

Practically everything FFmpeg reads: M4A, MP3, WAV, OGG, OPUS, AAC, FLAC, WMA, AMR — and video files (MP4, MOV, WebM), from which the audio track is extracted automatically.

Which output should I pick?

MP3 for universal playback (every device since the 90s), WAV for editing or burning CDs (uncompressed, larger), OGG for web projects and games (small, high quality, royalty-free).

Is there a file-size or daily limit?

None. Conversion happens on your device, so there is no server cost to ration. A 2-hour recording converts as freely as a 10-second clip.

Does converting reduce quality?

WAV output is lossless. MP3 and OGG are lossy but encoded at settings where speech is indistinguishable from the original; only converting lossy→lossy repeatedly degrades audibly — convert from the original file when you can.

Audio Converter — MP3, WAV, OGG Free & Private

Convert M4A, WAV, OGG, OPUS or FLAC to MP3, WAV or OGG. 100% free, unlimited, no account — converted right in your browser.

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converted on your device — your recordings are never uploaded

Audio conversion is a solved problem that somehow still costs people their privacy: the top converter sites upload your recording to their servers, queue it, convert it with the same open-source engine we use, and email you marketing forever. This tool runs that engine — FFmpeg, the industry standard — directly in your browser. Drop in almost anything (M4A, WAV, OGG, OPUS, AAC, FLAC, WMA, or even a video) and get MP3, WAV or OGG out, with the file never leaving your device.

MP3 output uses high-quality VBR encoding (~190kbps) that is transparent for speech and near-transparent for music; WAV is uncompressed for editing; OGG is the compact choice for the web and games.

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Frequently asked questions

Which input formats are supported?: Practically everything FFmpeg reads: M4A, MP3, WAV, OGG, OPUS, AAC, FLAC, WMA, AMR — and video files (MP4, MOV, WebM), from which the audio track is extracted automatically.
Which output should I pick?: MP3 for universal playback (every device since the 90s), WAV for editing or burning CDs (uncompressed, larger), OGG for web projects and games (small, high quality, royalty-free).
Is there a file-size or daily limit?: None. Conversion happens on your device, so there is no server cost to ration. A 2-hour recording converts as freely as a 10-second clip.
Does converting reduce quality?: WAV output is lossless. MP3 and OGG are lossy but encoded at settings where speech is indistinguishable from the original; only converting lossy→lossy repeatedly degrades audibly — convert from the original file when you can.

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🔒 Your files are processed on your device. This tool runs entirely in your browser — nothing is uploaded.