Split Audio
Split Audio cuts an audio file into parts in your browser by count, length, silences or typed times, with lossless copying where the format allows and a .zip of all parts.
At a glance
- Accepts
- MP3, M4A, AAC, WAV, FLAC, OGG and Opus audio, or the sound in a video file
- Outputs
- Separate files in the original format (lossless) or MP3, WAV or M4A, one by one or as a .zip
- Where it runs
- Entirely in your browser, on your device
- What leaves your device
- Nothing - the file never leaves your device
- Limits
- Up to 200 parts; lossless cuts land within about 20 ms; the .zip is built in memory
- Account
- Not required - there is no sign-up
- Price
- Free, with no watermark and no usage cap
- Made by
- Visrut
- Last updated
- 13 October 2026
Cut a long recording into pieces - a lecture into 10-minute chunks for a service with an upload limit, a live set into separate tracks at the gaps between them, or an audiobook at the chapter times you type. The cut points show on the waveform first, and you can download each part or all of them as a .zip.
How to use it
- Drop in an audio file.
- Choose how to split: equal parts, every few minutes, at silences, or at typed times.
- Pick Original (lossless) or MP3, M4A or WAV, press Split, and download the parts.
Honest limits
- The .zip is built in memory, so for very long WAV files download the parts one by one.
- Silence detection works on level only; tune the threshold if it splits in the wrong places.
- Everything runs in your browser tab; the file is never uploaded.
- Long files are read and processed a piece at a time, so the length of the recording isn't the limit. The finished file is held in memory until you save it: about 86 MB per hour as MP3, and about 690 MB per hour of 48 kHz stereo as WAV, which a phone may not manage.
- MP3 and M4A are re-encoded at 192 kbps, which is a lossy step (like any edit to an MP3). WAV is uncompressed 16-bit.
- M4A is offered only when the browser has an AAC encoder (most desktop Chrome, Edge and Safari do; Firefox does not).
Frequently asked questions
What ways can I split a file?
Into a number of equal parts, every so many minutes, at the silences (handy for a recording of separate tracks or takes), or at times you type. The cut points are drawn on the waveform before you split.
Does splitting lower the quality?
Not if you choose Original: the audio is copied as it is, without re-encoding, and each cut lands on the nearest audio frame (about 20 ms for MP3 or AAC). MP3, M4A and WAV re-encode the audio and cut exactly where you asked.
How do I download all the parts?
Download all (.zip) puts every part in one zip file. Each part also has its own player and download button.
How many parts can I make?
Up to 200 in one go.
Is my audio uploaded?
No. The file is split inside your browser tab.