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Kostenlos Audio Converter

Convert audio between MP3, WAV, FLAC, OGG, AAC, and M4A with bitrate control. Perfect for M4A to MP3. Everything is processed locally in your browser.

Keine DateigrößenbeschränkungDateien bleiben privatKeine Anmeldung erforderlichFür immer kostenlos

Dateien hier ablegen oder klicken zum Durchsuchen

MP3, WAV, FLAC, OGG, AAC, M4A, Audio keine dateigrößenbeschränkung

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Deine Dateien verlassen nie dein Gerät. Die Verarbeitung findet lokal in deinem Browser statt.

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Convert M4A to MP3 Convert WAV to MP3 Convert FLAC to MP3 Convert Audio to WAV Convert Audio for a Podcast

So funktioniert es

Most "convert M4A to MP3" sites upload your audio to a server. This one runs the real FFmpeg encoder inside your browser — your files stay on your device.

1
FFmpeg.wasm loads once
The WebAssembly build of FFmpeg (~30 MB) downloads the first time you use a media tool, then is cached for instant reuse.
2
You choose a format and bitrate
Your audio is loaded into FFmpeg's in-memory filesystem. Nothing is sent anywhere.
3
FFmpeg re-encodes the audio
MP3 (libmp3lame), AAC, Vorbis (OGG), or lossless FLAC/WAV — the same encoders desktop FFmpeg uses, running locally on your CPU.
4
The converted file is offered for download
The result is handed back as a downloadable blob and can be previewed with the built-in player.

No upload, no queue, no file-size cap. Convert voice memos, music, and recordings privately — they never touch a server.

Warum unseres?

✓Completely free — no hidden costs, ever

✓No account, email, or login required

✓Files stay on your device — processing happens in your browser

✓Works on any device — phone, tablet, desktop

✓No watermarks on any output

✓Browser memory limits may apply for very large files

Kostenlos Audio Converter

Optimize for your platform

So funktioniert es

Warum unseres?

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