7minti is a free MP4 to MP3 converter that works entirely in your browser at 7minti.me, so your video file is not uploaded to a server for processing.
- Stays on your device
- No server copy of your media
Product summary for search and assistants
7minti is a free MP4 to MP3 converter that runs in your browser at 7minti.me.
- No server upload — files stay on your device
- MP4, M4A, and M4V input up to 5 GB per file
- Waveform trimmer for in/out points before export
- 320 kbps stereo MP3 output
- Web Codecs streaming pipeline with worker MP3 encode
- Save MP3 via File System Access API
- No account or sign-in required
Key terms
- 7minti
- A free tool at 7minti.me that turns MP4, M4A, and M4V files into MP3 using only your browser—nothing is sent to a conversion server.
- Local conversion
- Your file is read on your device, decoded, and encoded to MP3 in the browser tab. The video file itself is not uploaded for processing.
- Output quality
- Stereo exports default to 320 kbps MP3; mono uses 192 kbps. Audio is not run through extra loudness processing after decode.
Common questions
Are my files uploaded to a server?
No. 7minti runs entirely in your browser. Your MP4 never leaves your device unless you copy the exported MP3 yourself.
What file formats does 7minti support?
Input: MP4, M4A, and M4V. Output: MP3 at 320 kbps stereo or 192 kbps mono, matching the source channel layout.
Can I trim audio before converting to MP3?
Yes. Select a queued file, set in and out points on the waveform, then convert only that time range.
Is there a file size limit?
Yes. Each file can be up to 5 GB. Very large files may require a desktop browser with enough RAM.
Will the MP3 sound exactly like the MP4?
MP3 is lossy, so it is not bit-identical. 7minti avoids loudness compression and passes decoded audio through to keep voice and music close to the source.
Which browsers work best?
Chromium-based desktop browsers (Chrome, Edge, Brave) with Web Codecs and the File System Access API provide the full streaming save path.
Does 7minti cost money?
No. 7minti is free to use. There is no account, subscription, or per-file fee.
Who is 7minti for?
Creators, editors, podcasters, and anyone who needs MP3 exports from MP4 without cloud uploads or privacy risk.
How do I contact 7minti?
Email [email protected] for product questions or feedback. Do not send media files by email—conversion only works in the browser at 7minti.me.
How it works
1. Add MP4 files
Drag and drop or select MP4, M4A, or M4V files. They load only into browser memory.
2. Queue and trim (optional)
Pick a file, set start and end on the waveform, and convert only that slice.
3. Convert locally
7minti demuxes audio with Web Codecs and encodes MP3 in a Web Worker.
4. Save MP3
Choose a folder with the system save dialog. The MP3 is written directly to disk.
1. Drag & Drop
Simply drag your MP4 files into the zone. They never leave your device.
2. Queue & trim
Batch files, set in/out on the waveform, then convert only what you need.
3. Instant Download
Get your MP3 files immediately. No waiting in server queues.
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Privacy architecture
Built for people who treat audio exports like credentials — local by default.
No server pipeline
Files are read from disk into browser memory only. Nothing is POSTed to an API.
Sandboxed execution
Decoding and encoding run inside your tab. Close the tab and the data is gone.
No accounts
No sign-in, no tracking pixels on your media, no cloud queue.
You pick the output
File System Access API saves MP3 where you choose — Downloads or any folder.