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Ramp audio from full volume to silence over the last N seconds.
An audio file that stops abruptly can sound jarring — a sudden click or pop where the ear expects the sound to settle. This tool fixes that by ramping the volume of your file down to silence over a duration you choose, from a fraction of a second up to 30 seconds. It's the standard finishing touch on song endings, podcast outros, background music beds, and voiceovers, and it takes one upload and one slider adjustment. Processing happens locally in your browser using the Web Audio API, so your file never leaves your device while the fade is applied and rendered to a downloadable WAV.
Your audio never leaves your browser. All processing uses the Web Audio API locally.
Drop an audio file to apply fade out
or click to browse — MP3, WAV, OGG, AAC, FLAC, M4A
Upload your audio file
Click 'Choose File' or drag and drop your audio onto the upload area.
Set the fade-out duration
Drag the slider to choose how many seconds the fade should last, from 0.1 seconds up to 30 seconds.
Click Apply Fade Out
Hit the Apply Fade Out button. The tool linearly ramps the audio from full volume to silence over the last N seconds of the file.
Download the result
Click Download to save the fade-out WAV file to your device.
Technically, a fade out is an amplitude envelope applied to the tail of an audio waveform. Every sample in the fade window gets multiplied by a gain value that starts at 1 (full volume) and decreases toward 0 (silence) as the window progresses. This tool uses a linear ramp, meaning the gain decreases at a constant rate across the fade duration — the most common and predictable-sounding curve, and the one used by default in most audio editors. The result is a waveform that tapers smoothly to zero amplitude exactly at the end of the file, instead of stopping at whatever amplitude it happened to be at.
The reason this matters is how the human ear perceives sudden changes in sound pressure. When audio is simply cut off mid-waveform, the abrupt jump from some amplitude to silence registers as a click or pop — an artifact, not a musical choice. Fading out avoids that discontinuity entirely. It's why virtually every song has some kind of ending treatment, why podcast editors fade outros under a closing line, and why looping background music or ambient soundscapes almost always fade rather than loop-cut. A fade also gives a track a sense of closure rather than an interruption.
Picking the right duration depends on the material. Fast fades of 1–3 seconds suit podcast segments and short clips where you want a clean, quick close. Music typically uses 3–8 seconds so the ending doesn't feel rushed. Ambient or cinematic audio can use much longer fades — 10 to 20 seconds — to let the sound dissolve gradually. This tool lets you dial in any duration from 0.1 to 30 seconds and preview the result before downloading, so you can match the fade to the mood of the piece rather than guessing.
Fade Out is one half of a pair — if you need the opposite effect at the start of a clip, pair it with a fade-in tool, or if your workflow involves combining multiple clips into one continuous track before adding a fade, check out Merge Audio to join files first, then apply the fade to the finished result.
Unlike most online tools, Toolivon processes everything directly in your browser using the Web APIs built into Chrome, Firefox, Safari, and Edge.
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Your audio files never leave your device
All processing runs directly in your browser using built-in Web APIs — the Canvas API, Web Audio API, and WebAssembly. Nothing is uploaded to any server. There is no account, no email, and no data retention. You can verify this yourself: open your browser's DevTools Network tab and watch zero outbound file requests while the tool processes your audio files.
GDPR-friendly · Works offline after page load · No file size limits beyond your device memory