Split a long audio file into several pieces - equal size, fixed duration or automatically at silent gaps. Locally, as a ZIP, no upload.
Running locally on your device ...
Running locally on your device ...
0%
Your files never left your device
No. Everything runs in your browser - your file never leaves your device. How this is verifiable
A two-hour lecture recording that needs to be broken into chapters; a whole-album-side recording from which a single song must be cut out; or a long podcast that cannot be uploaded at once because of a size limit - this tool breaks an audio file into several smaller pieces, no editing software needed.
Three split modes are on offer: "Equal-size parts" spreads the total length evenly across a chosen number of pieces; "Fixed duration" cuts into equal-length chunks, with the last piece carrying the shorter remainder; "At silent gaps" automatically looks for pauses above the chosen minimum length (the same level analysis as the "Remove silence" tool) and cuts there - ideal for separating individual tracks out of one continuous recording.
Each piece is output as its own file; from two result files onward, the page automatically offers an "all as ZIP" download. Processing runs entirely locally in the browser - the recording is never uploaded.
| Input formats | MP3, WAV, M4A, AAC, OGG, OPUS, FLAC |
|---|---|
| Auto-conversion | MP4 |
| Output formats | WAV, M4A |
| Batch processing | No |
| Processing | Locally in your browser (WebCodecs) |
| File upload | None |
Limitations: The "at silent gaps" mode stops with a clear message when no suitable pause is found - an honest error beats a random cut. "Equal-size parts" allows 2 to 20 pieces. Honest per-device length cap (desktop about 20 minutes, tablet 15, phone 10). Compressed inputs need the browser WebCodecs decoder.
No, everything runs locally in the browser.
"Equal-size parts" for a quick split, "fixed duration" for equal-length segments, "at silent gaps" for recordings with recognizable pauses between tracks or chapters.
The tool reports that honestly instead of cutting arbitrarily - try a higher sensitivity or a shorter minimum pause length.
From two result files onward, an "all as ZIP" button appears automatically.
Compress audio · Mono to stereo · Reverse audio · Remove silence