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IMAGES & MEDIA

MP4 to MP3 Converter

Convert MP4, MOV, WebM, MKV, AVI, and M4V videos to MP3 with selectable bitrate, stereo or mono audio, optional time trimming, playback, and download.

Tool statusUses server processing
Preview
prontouso://media/mp4-to-mp3VIDEO → MP3 → DOWNLOAD
  1. 01. CHOOSE VIDEO
  2. 02. EXTRACT AUDIO
  3. 03. DOWNLOAD MP3
Drop a video here orchoose a file
.mp4, .mov, .m4v, .webm, .mkv, .avi · up to 100.0 MB. Sent to our server to process, then deleted right away.

Maximum video length: 30 minutes.

How it works

  1. Enter your input

    Fill in the values, paste your text, or upload the file this tool works with.

  2. See results instantly

    Most tools update live as you type; a few use a single button. Either way, the result appears right on this page.

  3. Use your results

    Copy, download, or share what the tool produces — you're always in control of the output.

Converted temporarily on our server — The video is sent to a ProntoUso server because extracting and encoding MP3 audio needs FFmpeg. Temporary files exist only during that request and are deleted automatically; the video and MP3 are never stored or logged.

What is MP4 to MP3 Converter?

Convert MP4, MOV, WebM, MKV, AVI, and M4V video to MP3 online with selectable audio quality, stereo or mono output, optional trimming, playback, and download.

UNDERSTAND THE TOOL

How to convert MP4 to MP3

Extract a video's audio as a compatible MP3, choose the bitrate and channels, and optionally convert only a specific time range.

Choosing MP3 quality

Bitrate controls how much audio data is kept each second. 128 kbps creates a smaller file for speech, 192 kbps is balanced for everyday listening, and 256 or 320 kbps preserves more music detail at a larger size.

Stereo, mono, and trimming

Stereo keeps left and right channels for music. Mono combines them into one channel and is usually enough for lectures, interviews, and voice recordings. Enable trimming to enter start and end times in seconds when you need only one section.

How to use it

  • Upload a supported video up to 100 MB and 30 minutes.
  • Choose bitrate and stereo or mono output.
  • Optionally enable trimming and enter a valid time range.
  • Convert, listen to the MP3 result, and download it.

Converted temporarily on our server

The video is sent to a ProntoUso server because extracting and encoding MP3 audio needs FFmpeg. Temporary files exist only during that request and are deleted automatically; the video and MP3 are never stored or logged.

Frequently Asked Questions

Which video files and limits are supported?

You can upload MP4, MOV, M4V, WebM, MKV, and AVI files up to 100 MB and 30 minutes. The video must contain an audio track.

Does the MP3 include the video image?

No. MP3 is audio-only, so the video track is removed and only its audio is converted.

Which bitrate should I choose?

Use 128 kbps for speech and small files, 192 kbps for a practical default, or 256 to 320 kbps when music quality matters more than size.

Can I extract only part of a video?

Yes. Enable the time-range option and enter start and end times in seconds. Leaving the end empty converts from the start time through the end of the video.

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