FCFree Converter Tool

Video & Audio

MP4 to MP3 Online Free — Extract Audio From MP4

Free mp4 to mp3 online — Extract audio from MP4 video as an MP3 file. Also useful when you need extract audio from MP4. Private browser processing, no account required.

PrivateLocalMax 500MB
Extract the soundtrack from an MP4 as MP3. First run may download the media engine in your browser. Multiple files supported — download each result or a ZIP.

About this tool

About MP4 to MP3

MP4 to MP3 pulls the soundtrack from an MP4 video so you can listen without the video track. Ideal for saving music videos, talks, and tutorials as audio-only files. People also look for extract audio from MP4.

MP4 to MP3 is part of Free Converter Tool — a private, browser-first toolkit for PDF, image, video, audio, and everyday utilities. Use mp4 to mp3 online free without installing software.

  • Private browser-side processing
  • No account required for core use
  • Works on desktop and mobile browsers
  • Free on Free Converter Tool

Why use MP4 to MP3?

Choose MP4 to MP3 online when you want a free, private way to process files without uploading them to the cloud. Free Converter Tool runs MP4 to MP3 in your browser so you keep control of sensitive documents, photos, and media. No install, no watermark on core results, and no account required to get started.

How to use MP4 to MP3

Follow these steps to run MP4 to MP3 in your browser.

  1. 1

    Upload MP4

    Select or drop one or more supported files from your device.

  2. 2

    Review audio options

    Pick the output format or options you need before processing.

  3. 3

    Download MP3

    Run the conversion and download each result or a ZIP when available.

Tips for best MP4 to MP3 results

For the best MP4 to MP3 results, use a clear original file and avoid extremely large uploads when you can. Keep this tab open until the download finishes. If something looks wrong, try a smaller file or a different browser. Your file stays local while MP4 to MP3 runs.

Private by design

Files stay in your browser — not uploaded to our servers.

Instant local processing

Process on this page and download results right away.

Free MP4 → MP3 online

No install needed for core MP4 to MP3 use on Free Converter Tool.

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MP4 to MP3 FAQs

Common questions about using MP4 to MP3 free online on Free Converter Tool. Common searches: MP4 to MP3, extract audio from MP4, MP4 to MP3 online free, convert MP4 audio to MP3.

No. The output is an MP3 audio file only. The video track is discarded after extraction.
Yes. MP4 to MP3 on Free Converter Tool is free to use in your browser with no account required for core processing.
Files are processed locally in your browser and are never uploaded to our servers. Nothing is stored after you close the tab.
Open the MP4 to MP3 page, upload or drop your file, choose any options you need, then process and download the result — all on this page.
No. MP4 to MP3 runs in a modern browser (Chrome, Edge, Firefox, Safari). There is nothing to install or update.
Yes. MP4 to MP3 is designed for private, browser-side processing so your file stays on your device instead of being sent to a server.
Images and audio up to 50 MB, PDFs up to 100 MB, and videos up to 500 MB. For the best speed, keep files reasonably sized for your device.
Yes. MP4 to MP3 works on mobile browsers. Large files may process faster on a desktop or laptop.
No. Free Converter Tool does not add a watermark to results from MP4 to MP3 for normal use.
Free Converter Tool keeps MP4 to MP3 private and free in the browser — no signup wall for core tools, and your files are not uploaded to our servers.