Audio Splitter: Split Audio into Multiple Parts

Splitting a long audio recording into individual segments is one of the most common audio editing tasks — and it used to mean downloading software just to do it. AudioMultiCut makes it possible entirely in your web browser, with no installation required.

What is audio splitting?

Audio splitting means taking one continuous recording and dividing it into multiple shorter clips. For example, a two-hour band rehearsal might contain eight different songs; splitting it produces eight individual MP3 files, one per song. The same principle applies to lectures, meeting recordings, podcast recordings, live shows, language lessons, AI-generated voiceovers, and any other multi-segment audio.

The four-step process

1. 1

   Upload your audio file

   Drag and drop your MP3, WAV, M4A, or other audio file onto the upload zone, or click to browse your files. The file is loaded directly into your browser. Nothing is sent to a server.

2. 2

   View the waveform and detect segments

   Once uploaded, the full waveform renders in your browser. For long recordings, use Auto-Cut to detect silent gaps between segments, or choose equal parts to split the file into same-length clips.

3. 3

   Review and fine-tune your segments

   Click and drag on the waveform to manually create a segment, or adjust the start and end points of any auto-detected segment. Every time you trim a segment edge, AudioMultiCut plays that edge right away so you can hear exactly what changed.

4. 4

   Download individually or all at once

   Download each segment as an MP3 or WAV file, or use batch export to download all segments one after another. Files are named sequentially and are ready to use immediately.

Who uses audio splitting?

Musicians and bands record full rehearsals and need individual tracks per song for review, archiving, or sharing with bandmates. Teams and consultants record standups, client calls, discovery meetings, trainings, and user interviews, then split them into decisions, requirements, and follow-up clips. Teachers and educators record hour-long lectures and split them into topic-based clips for students to study. Podcasters and journalists record long interviews and extract the best moments as standalone clips. Voiceover creators bring generated speech from ElevenLabs, Speechify, Murf, PlayAI, LOVO, WellSaid, and other voice-generator tools, then cut it into sentences, script lines, pickups, and alternate takes.

Because AudioMultiCut runs entirely in your browser using the Web Audio API, your recordings stay completely private. No audio data ever leaves your device, so interviews, private lessons, and other sensitive recordings never leave your machine.

AudioMultiCut offers MP3 and WAV output, plus an original-quality M4A option for compatible M4A/AAC sources. The right choice depends on how you plan to use the file.

M4A Original: fastest, with no added quality loss

When the source is compatible M4A or AAC audio, Original-quality M4A copies the compressed audio frames into each clip without encoding them again. It is fast, keeps the source quality and bitrate, and aligns cut points to the source audio frames.

MP3: smaller, shareable files

MP3 is a lossy audio format that uses psychoacoustic compression to reduce file size significantly, typically 5–10× smaller than an equivalent WAV file. A three-minute segment encoded at 128 kbps MP3 will be roughly 2.8 MB, compared to 30 MB for WAV. MP3 files play on virtually every device, streaming platform, and media player.

Best for: sharing files by email or messaging apps, uploading to SoundCloud or YouTube, sending to bandmates for casual listening, or any situation where portability matters more than technical perfection.

WAV: full quality, no compression

WAV files store uncompressed audio data, preserving every detail of the original recording. There is no quality loss from encoding, which is why it's the go-to when you still need to edit the file.

Best for: archiving original recordings, importing into GarageBand, Logic Pro, Audacity, or other DAWs, professional mastering workflows, and any case where you need to preserve maximum audio fidelity.

Note on M4A source files: Choose M4A Original quality to avoid re-encoding a compatible M4A/AAC source. Choosing MP3 still performs a lossy conversion; choosing WAV produces uncompressed audio.