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Audio Silence Trimmer
Detect quiet passages, trim the silence at the start and end, and export a clean PCM WAV file.
Trim silence from an audio file
Duration: —
Silent passages: —
Exported length: —
Status: Choose an audio file to begin
How to use the Audio Silence Trimmer
- Choose the audio file you want to clean up.
- Set the silence threshold and the minimum gap length, then press Trim silence.
- Download the trimmed WAV, or split at internal silence and download each part.
Features
- Leading and trailing silence detection
- Optional splitting at internal silence
- Adjustable threshold and minimum gap
- 16-bit PCM WAV export with a correct RIFF header
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Frequently Asked Questions
Common questions about the free online audio silence trimmer.
Choose the file, set a silence threshold such as -45 dB and a minimum gap, then press Trim
silence and download the WAV.
Minus 45 dB suits most studio and voice recordings. For a noisy room try -30 dB, and for very
clean digital audio try -60 dB.
It ignores quiet moments shorter than that many seconds, so natural pauses inside words are
not mistaken for silence to cut.
Yes. Switch to split at internal silence and the recording is cut at the quiet gaps into
several parts, ready to download.
A WAV with a 16-bit PCM payload is uncompressed and universally supported, so the edited
result loses no quality.
In trim mode only the start and end are cut. Use split mode to chop the recording at the
internal quiet passages.
Either the recording has a high noise floor or the threshold is too low. Raise the threshold
and scan again.
No. The file is decoded, analysed and rewritten as WAV inside your browser; nothing is
transmitted.
Yes. It is completely free with no account, no sign-up, no watermark and no limit on the
number of files you process.
Last updated: October 10, 2026