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Fade Audio Online

or drop files here

Add gradual starts and endings to a recording. Choose separate fade-in and fade-out durations, then select a linear or cosine-shaped transition.

Shape the opening

Set a fade-in long enough for the intended entrance. Spoken content that starts immediately may lose its first syllables under a long fade.

Give the ending room

Fade-out reduces level toward the end rather than appending silence. Leave enough musical or ambient material for the transition.

Compare the curve shapes

Linear and cosine curves change gain at different rates. Listen to the transition rather than choosing solely from the duration number.

Check short recordings

Fade lengths are limited by track duration. If the fade-in and fade-out overlap, their combined attenuation can affect much of a short clip.

Technical references: Web Audio API specification

Audio Fade In & Out FAQs

No. It changes gain over time without removing samples.
No. Use Audio Delay when you want additional repeated echoes after the source.
Keep enough of the ending in the source and choose a fade-out duration that reaches back before the last audible cut. Listen to the final seconds, then shorten or lengthen the fade. The fade changes volume within the clip; it does not invent a musical ending.
Audio Fade In & Out schedules a background render after a setting changes. The completed preview or analysis replaces the previous result automatically. Processing time depends on recording length and device performance; the status message shows when the new result is ready.

Related tools

Audio Cutter

Trim audio and download a selected section as a WAV file.

Audio Joiner

Join audio tracks in selection order with an optional crossfade.

Add Audio Silence

Add a silent lead-in and tail to your audio track.

Audio Delay Effect

Add decaying echoes with adjustable delay time and feedback.