Is the converter free?

Yes. There is no watermark, no account to make and no quota.

Is my video uploaded?

No. FFmpeg, the converter, runs in your browser on this device, so the video and the MP3 never leave it.

Which MP3 setting should I use?

MP3 320 kbps keeps music closest to the original. Podcast MP3 makes a smaller file for speech and evens out the volume.

Can I get WAV or FLAC instead?

Yes. Choose WAV or FLAC as the format for lossless audio, or M4A for a small file that plays well on phones.

Can I convert other formats?

Yes. The same converter turns videos, sounds and pictures into MP4, WebM, MOV, GIF, WAV, FLAC, PNG, JPG and WebP, with presets for YouTube, Shorts, Instagram, TikTok, Spotify Canvas and Discord.

MP4 to MP3 Converter: Free and Private

Convert an MP4 to MP3

Press Choose files and pick your MP4. MOV, WebM and other videos work too, and you can add several at once.
The preset is MP3 320 kbps, the highest MP3 quality. For speech, choose Podcast MP3: mono, 128 kbps, with the loudness evened out to -16 LUFS.
Press the Convert button. Each file shows its progress and is ready to download when it finishes.
Download the MP3, or use Send to to take it to another Sonic Weaver tool.

Questions

Is the converter free?: Yes. There is no watermark, no account to make and no quota.
Is my video uploaded?: No. FFmpeg, the converter, runs in your browser on this device, so the video and the MP3 never leave it.
Which MP3 setting should I use?: MP3 320 kbps keeps music closest to the original. Podcast MP3 makes a smaller file for speech and evens out the volume.
Can I get WAV or FLAC instead?: Yes. Choose WAV or FLAC as the format for lossless audio, or M4A for a small file that plays well on phones.
Can I convert other formats?: Yes. The same converter turns videos, sounds and pictures into MP4, WebM, MOV, GIF, WAV, FLAC, PNG, JPG and WebP, with presets for YouTube, Shorts, Instagram, TikTok, Spotify Canvas and Discord.