How does this decide what counts as silence?

It measures the RMS loudness in short 20ms windows and marks a window as silent when it stays below the threshold you set, in decibels — a lower (more negative) number is stricter about what counts as silent.

Why isn’t a short pause between words removed?

Only silent runs at least as long as the minimum-gap setting get cut, so brief natural pauses between words or sentences are left intact rather than making the audio sound clipped.

Does this tool upload my audio anywhere?

No — detection and trimming both happen locally in your browser.

Remove Silence from Audio

Automatically cut silent gaps out of an audio file.

Choose an audio file

Files never leave your device — this runs entirely in your browser. Output is WAV.

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How it works

1
Choose an audio file

Up to 100 MB.
2
Set the threshold and minimum gap

Defaults (-40 dB, 300ms) work well for spoken-word audio.
3
Silent stretches are cut

The remaining loud segments are spliced back together and re-encoded as WAV.

FAQ

How does this decide what counts as silence?: It measures the RMS loudness in short 20ms windows and marks a window as silent when it stays below the threshold you set, in decibels — a lower (more negative) number is stricter about what counts as silent.
Why isn’t a short pause between words removed?: Only silent runs at least as long as the minimum-gap setting get cut, so brief natural pauses between words or sentences are left intact rather than making the audio sound clipped.
Does this tool upload my audio anywhere?: No — detection and trimming both happen locally in your browser.