Free · Private · Runs in your browser

MP4 to MP3 Converter

Pull the soundtrack out of a video — a lecture, a screen recording, a clip from your camera roll — and save it as an MP3. Works in Safari on iPhone, too.

How to convert MP4 to MP3

  1. 1

    Add a video

    MP4, MOV or M4V. On iPhone, tap Choose files → Photo Library.

  2. 2

    Pick the quality

    192 kbps is the sweet spot; 128 kbps is plenty for speech.

  3. 3

    Convert and save

    Download the MP3. On iPhone it goes to Files → Downloads.

Screen recordings and lectures

iPhone screen recordings, Zoom exports and lecture videos are MP4 or MOV files. Converting them to MP3 keeps only the audio, which is a fraction of the size and plays in any podcast or music app.

The audio is decoded by your browser and re-encoded to MP3 with the open-source LAME encoder. Expect a few seconds per minute of audio on a modern phone.

Private conversion

Your file is opened by your own browser and converted on your device. Nothing is uploaded, so there is no queue, no file-size quota and no copy left on someone else's server. You can even disconnect from the internet after the page has loaded and the conversion still works.

Size limits and formats

Because the whole file is processed in memory, keep videos under about 400 MB on a computer and 200 MB on a phone. MP4 and MOV work in every modern browser; MKV and WEBM depend on your browser (Chrome and Firefox handle them, Safari may not). For other iPhone methods, see MP4 to MP3 on iPhone.

By Furkan Kaya, developer of ConvertEase · Updated

Frequently asked questions

Yes. Open this page in Safari, choose the video from your photo library, convert, and the MP3 downloads to the Files app.

192 kbps for music, 128 kbps for speech and voice. 320 kbps is the maximum MP3 quality.

No. The audio is extracted in your browser; the video never leaves your device.

Either the video has no audio track or your browser cannot read that container (common with MKV in Safari). Try Chrome, or convert a shorter clip.

Related tools and guides

M4A to MP3Voice Memo to MP3MP4 to MP3 on iPhone

What about the ConvertEase iPhone app?

Being straightforward: the iPhone app does not create MP3 files — on iOS it converts audio to M4A, WAV and AAC, and converts video between MP4, MOV, MKV, AVI and 3GP. For MP3, this web page is the right tool, and it works in Safari on iPhone.

The app is free to download; saving results requires a ConvertEase Premium subscription.

View on the App Store