Custom fade in and fade out for audio online
Type the exact fade length you want, from a fraction of a second up to the whole track. There is no fixed limit and nothing is uploaded. Preview the fade, then save WAV or MP3.
Drop audio to fade
Useful for podcast outros, song endings, ringtones and social clips.
MP3, WAV, M4A, OGG, OPUS, AAC, FLAC
Seconds of volume rise at the start. Type any length up to the file length, or drag the slider for 0 to 15 seconds. Zero turns it off.
Seconds of fade into silence at the end. Type any length up to the file length. Zero turns it off.
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How do I fade audio in and out online?
Open the audio file, type the fade in and fade out lengths in seconds, listen to the Faded preview, and save a WAV or an MP3. There is no fixed limit: each fade can be any length up to the length of the file, so you can use a half-second fade to remove a click or a fade that lasts the whole track. It runs in your browser with the Web Audio API, so the file is not uploaded. It is free, with no account and no watermark.
Can I set a custom or unlimited fade length?
Yes. Type any number of seconds in the fade in or fade out box, for example 0.5, 30 or 180. The only limit is the length of your file, because a fade cannot be longer than the audio. The slider covers 0 to 15 seconds for quick changes, and the number box goes beyond it. If the two fades together are longer than the file, they overlap and the track never reaches full volume.
What does the fade curve sound like?
The fade uses a smooth S-shaped curve (a raised cosine). It starts and ends gently, so a fade in does not jump and a fade out does not drop suddenly. The waveform draws the same shape, so what you see is what you hear and what you save.
How to use it
- Open a file MP3, WAV, M4A and other files the browser can decode.
- Type the lengths Type seconds in the number boxes, for example 0.5 in and 8 out, or drag the sliders for 0 to 15 seconds.
- Preview and save Press play on Faded to hear it, then save WAV for full quality or MP3 for a smaller file. Nothing is uploaded.
Fade length guide
| Fade length | Good for |
|---|---|
| 0.05 to 0.5 seconds | Removing clicks and pops at cuts and loop points. |
| 1 to 3 seconds | A clean intro or outro on a clip or podcast. |
| 5 to 10 seconds | A song-style ending. |
| 30 seconds or more | A long, slow fade for ambient tracks, DJ transitions and background music. |
Common uses
Fade out a song ending, soften the start of a voice-over, remove a click where two clips meet, lower background music under a video, finish a ringtone cleanly, or build a long fade for ambient audio.
FAQ
Is there a limit on fade length?
No fixed limit. Each fade can be any length up to the length of your file. Type the seconds in the number box. The slider covers 0 to 15 seconds for quick changes. A fade is never longer than the file, so a value above the file length is reduced to it.
Can I fade in without fading out?
Yes. Set fade out to 0 and only the fade in is applied, or set fade in to 0 for the opposite. Fade in starts at 1 second and fade out at 2 seconds, so change either value before you save if you want only one.
How do I fade out a song at the end?
Set fade in to 0, type how many seconds you want the ending to last in the fade out box, for example 8, listen with Faded, then save. The fade is measured back from the end of the file.
Does it change the rest of the audio?
No. Only the start and the end change. The middle keeps its original volume. The result is saved as a 16-bit WAV or an MP3 at 192 kbps.
Which files can I fade?
Any file your browser can open, such as MP3, WAV, M4A and OGG. The saved file is WAV or MP3.
Is the fade uploaded?
No. The fade is applied in your browser with the Web Audio API, so the file never leaves your device and no copy is kept. You can preview the faded result before downloading it. Closing or reloading the tab discards everything. You must own the rights to the audio you process.