Convert MP4 to MP3 online

Extract the audio from any video and download it as MP3 at the quality you choose. Nothing to install, no sign-up, no watermark. Files are deleted within 1 day.

Free to start. No limit on Pro for US$ 2.90 a month.

Choose the video to extract audio from or drag and drop here Choose file Max 300 MB per file

Your file is processed on secure servers and deleted automatically within 1 day. We never store or analyze the content.

Rollin Ferramentas Pro

Transcribe without limits

One subscription for every Rollin Host online tool. The subscription is tied to your account email.

Unlimited number of transcriptions
Audio and video up to 2 hours per file, with priority queue
30-day history in your panel, as TXT, SRT and VTT
PDF with no daily limit, files up to 100 MB

Files sent encrypted and deleted afterwards
No lock-in: cancel anytime

US$ 2.90/month

or US$ 19.30/year, US$ 1.61 a month

Subscribe for US$ 2.90/month Yearly for US$ 19.30 Only need it for a week? 7-day pass for US$ 1.90 Compare with other tools

How to convert MP4 to MP3

Upload the video

Drag in an MP4, MOV, MKV, WEBM or AVI file, or click to choose one. Up to 300 MB per file.

Pick the quality

192 kbps sounds great for music and speech. Use 320 kbps for the best quality or 128 kbps for the smallest file.

Download the MP3

Conversion takes seconds. The download button appears on the same screen, named after your file.

What it's for

Keep just the music or speech

That concert, lecture or video podcast becomes a lightweight MP3 to play on your phone or in the car.

Audio for editing

Separate the track from a video to use in audio editors, podcasts or as the background of another video.

Save space

A 1 GB video can become a 60 MB MP3 with the very same audio.

Transcribe afterwards

Need the text of the video? Use our <a href="/en/transcrever-video">video transcription</a> directly: it extracts the audio and returns text and subtitles.

Frequently asked questions

Which video formats are supported?

MP4, MOV, MKV, WEBM, AVI, 3GP, MPEG and M4V. If the video plays on your phone or computer, it almost certainly works here.

What is the maximum file size?

Up to 300 MB per file and up to 3 hours long. For bigger videos, compress first or trim to the part you need.

Does the audio quality drop?

MP3 is a compressed format, but at 192 kbps the difference is inaudible for most people. If the video has music and you want the best, choose 320 kbps.

Do I need an account?

No. Conversion is open, with no sign-up or login. There is a per-minute limit per connection to prevent automated abuse.

What happens to my video?

It is uploaded encrypted, processed on secure servers and deleted automatically within 1 day. Nobody on the team sees the content and nothing goes to backups.

Does it work on mobile?

Yes. Open this page in your phone browser, pick the video from the gallery and download the MP3 to your downloads folder.

Can I convert MOV files from an iPhone?

Yes. MOV, HEVC and the iPhone and Android formats are accepted without prior conversion.

Can I also get the text of what is said?

Yes, with another tool: video transcription returns the full text and SRT subtitles. See them all under Tools.

Need the text of the video?

Besides extracting audio, Rollin transcribes videos and audio for free: full text and SRT/VTT subtitles in minutes, with automatic language detection.

Transcribe video for free