How to use Audio Trimmer and Cutter
- Choose a supported WAV and inspect the waveform before setting the cut.
- Enter Start time and End time in seconds; leave End time empty to keep the remainder.
- Set Fade-in and Fade-out to zero for an unchanged cut, or enter fades that fit inside the selection.
- Run the trim, listen to the new WAV and check its duration before keeping it.
Example: Audio Trimmer and Cutter
Remove the first and last quarter of a one-second recording.
Options
- Start time (seconds)
- The start is an offset from the beginning of the input, not a clock time. It is rounded to the nearest sample frame.
- End time (seconds)
- The end marks the first frame outside the cut. A blank value uses the input duration; end must be later than start.
- Fade-in (seconds)
- A linear ramp rises from silence at the start of the retained selection. Zero leaves those samples unchanged.
- Fade-out (seconds)
- A linear ramp falls toward silence at the end. The two fade lengths together must fit inside the cut.
Supported inputs and limits
Where your input is processed
This tool processes your input in this browser. Your text and files are not uploaded to UseFreeTools. Check this tool's limits for anything it may save on your device.
Why a boundary may move by a sample
At 48,000 Hz, adjacent frames are about 0.0000208 seconds apart. The entered times select whole frames rather than fractions of one. A cut can click if its first or last sample differs sharply from the neighbouring silence. Short fades can soften that boundary, but they also change the selected audio.
Check what the export retains
The downloaded file preserves the selected channel layout and sample rate. Higher-precision input is written as 16-bit PCM, and embedded tags are not copied. Keep the source separately when those details matter. A WAV extension alone does not prove support: compressed and extended WAV variants are refused.
Questions about Audio Trimmer and Cutter
Does this export MP3?
No. The supported output is 16-bit PCM WAV.
Is the original file overwritten?
No. Download a new file after reviewing its range.
Why can the exact cut differ by a tiny amount?
Cuts map to sample boundaries at the input sample rate.