Uwarp

Both sides are saved as MP3. Video uploads keep the audio only. The first run downloads FFmpeg once in this browser.

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Split audio online

Split audio online into two MP3 parts at a time you choose and download both files. Local-first. No signup.

What is split audio online?

Split audio online means dividing one recording at a time you choose and saving both sides. This free local-first tool writes two MP3 parts—no signup. It keeps the audio before the split and the audio after it.

Split audio features

One split point, two MP3 files.

  • Both parts

    The file is divided at the time you set, and each side is saved.

  • MP3 download

    Part 1 and part 2 download separately at 192 kbps.

  • Playback

    Listen to each part before you save it.

  • Audio or video

    MP3, M4A, WAV, MP4, MOV, or WebM. Video files keep the soundtrack only.

How to split audio

From one file to two MP3s.

  1. Upload the file

    Drop audio, or a video if you want its soundtrack.

  2. Set the split

    The slider starts at the halfway point. Move it to the time you want.

  3. Download both parts

    Save part 1 and part 2 after you preview them.

Tips for splitting audio

Leave a usable piece on each side.
  • 01

    Half a second minimum

    The split stays at least 0.5 seconds away from the start and the end.

  • 02

    One cut, two files

    A second split means running the tool again on one of the parts.

  • 03

    Trim versus split

    Use Cut Audio when you only want to keep a middle section.

  • 04

    Video picture is not in the MP3

    A video upload becomes two audio files. The frames are not included.

Great for

When one recording should become two files.

  • Long takes

    Separate an intro from the rest of a recording.

  • Podcast sections

    Break a file at a chapter time you already know.

  • Soundtrack pulls

    Split the audio of a video into two MP3s.

Why split audio here

A local split into two MP3s.

  • Free

    Unlimited splits with no signup.

  • Local-first

    The file is processed in the browser.

  • Both sides kept

    Each download is one half of the original timeline.

  • MP3

    Parts open in a normal player.

Technical notes

How the two parts are cut.
Part 1
From the start to the split time.
Part 2
From the split time to the end of the file.
Output
MP3 via libmp3lame at 192 kbps. Video tracks are dropped.
Privacy
Client-side FFmpeg. The file is not uploaded to a server.

Sources & References

FFmpeg seek and stop options used for the two parts.
  • “When used as an input option (before -i), seeks in this input file to position.”
    — FFmpeg Documentation — -ss

    FFmpeg — -ss: Part 2 starts by seeking to the split time. ffmpeg.org/ffmpeg.html#Main-options

  • “Stop writing the output or reading the input at position.”
    — FFmpeg Documentation — -to

    FFmpeg — -to: Part 1 stops at the split time. ffmpeg.org/ffmpeg.html#Main-options

Frequently Asked Questions

Quick answers about this tool—open a question to read more.