Audio cutter
Open an audio file, then drag on the waveform or use the sliders to choose where the cut starts and ends. Preview the selection and save it as a WAV file. The audio is decoded and cut on your device and never uploaded.
Runs in your browser: nothing you enter is sent anywhere.
How to use it
- Choose an audio file or drop it on the box.
- Drag on the waveform: the closer handle moves to your pointer. For fine control use the Start and End sliders; the arrow keys move them in small steps.
- Press Play selection to check the cut.
- Press Save selection as WAV. The file is named after the original with
-cut added.
How it works
The browser decodes the file into samples. The waveform shows the loudest sample in each small slice of time. When you save, the samples between the two handles are copied and written as a standard WAV file: a 44-byte header followed by 16-bit samples.
Example
A 3:20 song with the handles at 0:45.00 and 1:15.50 gives a 30.5-second WAV with the same number of channels as the original.
Tips
- Zoom is not available; for precise edits, move the handles with the sliders.
- If you need a compressed result, convert the WAV to MP3 afterwards in another tool.
Frequently asked questions
Which audio formats can I open?
Any format your browser can decode. Chrome, Edge, Firefox and Safari all handle WAV and MP3; AAC/M4A and OGG support depends on the browser. If decoding fails, convert the file to WAV or MP3 first.
Why is the result a WAV file?
Writing WAV needs no encoder library: the selected samples are stored as uncompressed 16-bit PCM with the same number of channels. The browser decodes at its own sample rate (often 44.1 or 48 kHz), which is the rate of the saved file. WAV files are larger than MP3 but lose no further quality.
Is the cut exact?
The range is stored in hundredths of a second and rounded to the nearest sample. The file is cut at those samples, with no fade, so a cut in the middle of a loud sound can click.
Is my audio uploaded?
No. Decoding, preview and export all happen in your browser, and the file is not sent to any server.
Why does a large file fail?
Decoded audio takes far more memory than the compressed file, about 20 MB per minute for stereo at 44.1 kHz. Very long recordings may exceed what the browser can allocate, and files over 100 MB are refused.