onemaker.io

Convert MP4 to MP3

The audio of any MP4, as MP3 up to 320 kbps. Free, no signup.

Drop an MP4 and get its sound back as an MP3 in seconds — at 320, 256, 192 or 128 kbps, or as WAV or FLAC when you need the studio version. Pick “Original” and the track is copied out byte for byte, with no second encode. Then turn it into a lyric video in the editor.

How it works

a few seconds

  1. Drop your MP4

    Any of the formats listed, up to 500 MB. It uploads straight from your browser.

  2. Pick MP3 and a bitrate

    320, 256, 192 or 128 kbps; WAV or FLAC for the studio; or “Original” — the track as it sits in the MP4.

  3. Download your MP3

    One file back, on a player. Then add it in the editor's Audio tab and make a video for it.

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Questions

Is the MP4 to MP3 converter free?
Yes — no signup, no watermark, the whole file. The 500 MB limit exists to stop abuse, not to sell you a plan.
Which bitrate should I pick?
320 kbps for the best MP3. If the MP4 carries a lower-quality track, “Original” gives you exactly that track without encoding it twice.
Does it work with other video files?
Yes — MOV, MKV and WebM too. The drop zone lists every format it takes.
What if the MP4 has no sound?
Then there is nothing to pull out, and the page says so instead of handing you a silent file.
What happens to my video?
Your upload is deleted the moment the extraction finishes. The audio stays for 24 hours so you can come back for it, then it is deleted too.
Try it free
MP4 to MP3 Converter: Extract Audio, Free · Onemaker