Every other “free converter” wanted an upload and my email. This one just converts, right in the tab.
MP4 to MP3 Converter — Free, Fast & Private
Extract the audio from any video as an MP3 — right in your browser.
Nothing is uploadedThe file is read and rewritten on your own device.
No account, no watermarkNo sign-up, no daily limit, nothing to install.
10 formats in, any of them outMP4, MOV, MKV and other video or audio files
Convert an audio file
or drop a file anywhere on this card
Files are processed in your browser and never uploaded
How to Convert MP4 to MP3
Three steps, all of them in the tool above.
Select your video
Drop in an MP4 — or MOV, MKV, WEBM and most other video or audio files.
Pick the output format
MP3 by default, or choose WAV, M4A, AAC, FLAC, OGG, OPUS, WMA, AIFF, AC3.
Convert and download
The audio track is extracted right in your browser and saved to your device.
Why Convert MP4 to MP3 Here
No uploads, no accounts, no catches.
Private by design
Files are processed on your device with in-browser conversion — nothing is uploaded, ever.
Free, no strings
No account, no watermark, no daily caps. It just converts.
10 output formats
MP3, WAV, M4A, AAC, FLAC, OGG, OPUS, WMA, AIFF and AC3 — one tool for every audio need.
Quality kept
MP3 comes out at 192 kbps — clean sound for music, podcasts and voice.
Need the Words, Not Just the Audio?
Transcribe Audio Free30 free minutes · No credit card
If you’re extracting audio to hear what was said, skip a step — our AI transcribes MP4 and MP3 directly into accurate, timestamped text in 120+ languages.
Generate perfectly timed captions for the original video, fine-tune them on a visual timeline and export SRT or VTT — free to start.
Loved by Creators, Teams and Researchers
Rated Excellent 4.8/5 based on 580+ reviews
Watched the network tab out of curiosity — nothing gets uploaded. Sold.
Uploaded a two-hour recording during lunch — the transcript was waiting before I finished my coffee. The accuracy genuinely surprised me.
Our legal team approved it because processing stays on EU infrastructure. That alone ruled out most of the competition.
I turn lecture MP4s into MP3s for my commute. Ten files a week, zero fuss.
Extracted audio from a concert video and the MP3 sounded exactly like the original track.
No card, no tricks — I tested real files before paying and upgraded a week later because the workflow stuck.
Had trouble with a huge file — support walked me through batch upload the same morning. Rare these days.
Yes — completely. No account, no watermark, no daily conversion limits. The converter runs in your browser, so there’s no server cost for us to pass on to you.
No. The conversion happens locally in your browser using in-browser processing — your video never leaves your device. You can verify it yourself: the network tab stays quiet.
Input: MP4, MOV, MKV, WEBM, AVI and most video formats, plus audio files like WAV or FLAC. Output: MP3, WAV, M4A, AAC, FLAC, OGG, OPUS, WMA, AIFF and AC3.
The practical limit depends on your device, since conversion runs locally in the browser. Typical videos convert without issues; for very large files a computer handles it better than a phone.
MP3 is encoded at 192 kbps — transparent quality for speech and good quality for music. Choose WAV or FLAC for lossless output.
Yes — any modern browser on desktop or mobile works. No app or extension to install.