How do I convert MP4 to MP3 without software?

Drop the MP4 above, select MP3 and download. The decode and the encode happen in the browser, so nothing is installed.

What bitrate is the MP3?

320 kbps, fixed. That is ample for review copies and transcription. Use WAV instead when the audio goes back into a mix.

Is there a length limit?

Only your machine's memory. Two hour conference recordings convert fine on a normal laptop.

Are my videos uploaded?

Never. That matters for interviews under embargo or client material you cannot put on a public converter.

MP4 to MP3

MP4 to MP3 Converter – Keep Your Footage on Your Machine

Pull the soundtrack of an MP4 into a light MP3 for review, notes or transcription. No queue, no watermark, no upload: the conversion runs entirely in this browser tab.

1st conversion free
No installation
No plugin
Files stay local

Drop a video file

MP4, MOV, M4V, WEBM. The video stays untouched; audio is decoded locally

Browse files

✓ 1st conversion free. ✓ Your audio stays on your device.

What this tool does for you

Turn the audio of an MP4 into a shareable MP3
320 kbps encoding, or a lower rate when size matters
No watermark, no queue, no account for the first conversion
Everything runs in your browser. Files are never uploaded to a server.

How it works

01. Drop your MP4
Camera files, exports, screen recordings.
02. Select MP3
320 kbps, at the sample rate you need.
03. Download
Share it, or keep WAV for the edit.

When MP3 is the right output

Distribution, not production

MP3 is a delivery format. It is the right choice for a review link, a client listen or a phone, and the wrong choice for anything you intend to edit further, because each re-encode compounds the loss. Keep a WAV master and export MP3 copies from it.

Transcoding AAC to MP3

MP4 audio is normally AAC, so an MP3 export is a lossy-to-lossy transcode. Use a high bitrate to keep the second encode from adding audible artefacts on top of the first.

Professional use cases

Video editing

Send a client a lightweight audio-only version of a cut for notes.

Podcasting

Produce a compressed episode file from a video recording.

Your audio stays on your device

Decoding, processing and export all run in your browser: compressed formats are decoded with the Web Audio API, and WAV, AIFF and MP3 files are written by JavaScript in the page. Your audio is never uploaded to our servers. Only anonymous page analytics and, if you sign in, your account and payment details go online.

Frequently asked questions

How do I convert MP4 to MP3 without software?: Drop the MP4 above, select MP3 and download. The decode and the encode happen in the browser, so nothing is installed.
What bitrate is the MP3?: 320 kbps, fixed. That is ample for review copies and transcription. Use WAV instead when the audio goes back into a mix.
Is there a length limit?: Only your machine's memory. Two hour conference recordings convert fine on a normal laptop.
Are my videos uploaded?: Never. That matters for interviews under embargo or client material you cannot put on a public converter.

Related audio tools

MP4 to WAV WEBM to MP3 Extract audio from video

Get your production audio edit-ready

Convert my file free