Convert MP4 to MP3
Convert MP4 to MP3 free in your browser. No upload, no signup, no watermark. Pick 128, 192, or 320 kbps and download instantly.
Drop a video or audio file here
or click to browse. Converted in your browser, nothing uploaded.
MP4 · MOV · MKV · WebM · AVI · WAV · M4A · FLAC · OGG · OPUS and more
🔒 Converted on your device. Your file is never uploaded.
MP4 videos usually carry their sound as AAC audio. Converting to MP3 gives you a file that plays anywhere, from old MP3 players to car stereos, and is easy to share or edit.
Drop the MP4 in, choose a quality, and download. The conversion runs on your device, so even large files start right away and nothing is uploaded.
Good to know
- Only the audio is kept; the video picture is discarded.
- If you just need the original audio without re-encoding, choose M4A: MP4 audio is usually AAC already, so M4A is the closest match.
- Need the words, not the audio? Use the MP4 to text transcriber instead.
How it works
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Drop your file
Video or audio in any common format. Nothing is uploaded.
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Converted in your browser
FFmpeg runs on your device, so even big files start right away.
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Download
Save the new file. No watermark, no account, no queue.
Frequently asked questions
Is my file uploaded to a server?
No. The converter (FFmpeg compiled to WebAssembly) runs inside your browser, so the file never leaves your device. That also means there is no upload wait, even for big videos.
Does converting reduce quality?
MP3 is a lossy format, so it is a re-encode. At 192 or 320 kbps the difference is very hard to hear.
Does it work on a phone?
Yes, in a modern mobile browser. Big videos convert faster on a computer.