Convert MP4 to MP3Right in Your Browser
Extract the audio track from MP4 videos as high-quality MP3 — perfect for podcasts, music and voice notes. The video never leaves your device.
Drag & drop files here
or click to browse
Your files never leave your device
Select the output format and click Convert
1. Add your files
Drag & drop or click to browse. Multiple files supported.
2. Pick your settings
Choose the output format.
3. Download
Files convert on your device and download instantly.
About this conversion
MP4 is a video container, but very often the only part you actually want is the sound — the music, the voice-over, the audio from a screen recording. Converting MP4 to MP3 gives you a small, universal audio file that plays on every phone, car stereo and music app without dragging the video along with it.
Because the conversion happens locally in your browser, there's no upload wait and no privacy trade-off. The audio is re-encoded at a high-quality bitrate that's transparent for normal listening, so the MP3 sounds just like the original soundtrack — only far smaller and far more portable.
Frequently Asked Questions
What audio quality do I get?
Audio is encoded with LAME's high-quality VBR preset (~190 kbps), which is transparent for almost all listeners. If the source audio is lower quality, the MP3 simply matches it.
Is it safe to convert MP4 videos online?
Yes. Unlike traditional online converters, this tool never uploads your files. The conversion runs entirely inside your browser using WebAssembly, so MP4 videos never leave your device — you can even disconnect from the internet after the page loads and it still works.
Is this converter really free?
Yes — completely free, with no sign-up, no watermarks, and no file-per-day limits. Because conversion happens on your own device, there are no server costs to pass on to you.
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A free, privacy-first online converter built by Softorino.
No sign-up. No ads. No data collection.
Supports the most common video and audio formats — MP4, MKV, MOV, WEBM, GIF, MP3, WAV, FLAC and more — with a focus on Apple-compatible outputs.
Softorino Converter is a free, fast, privacy-first video & audio converter that runs in-browser (no sign-up, no data collection).
Why It Exists
Most top search results for "how to convert [X to Y]" lead to sketchy, ad-heavy websites or tools that:
- —Upload your file to unknown servers
- —Limit free use or add watermarks
- —Track you or show spammy ads
Softorino Convert is trying to be the trusted alternative:
No tracking. No uploading. No BS.