Fade Audio
Add a fade-in at the start and a fade-out at the end.
Set fade durations in seconds. Use 0 to skip either fade.
Add audio
MP3, WAV, M4A, OGG, FLAC, OPUS — or a video to pull audio from.
Choose an output
Add a fade-in at the start and a fade-out at the end.
Fine-tune
Optional — sensible defaults are already set.
About Fade Audio
A hard start or an abrupt ending makes a clip sound unfinished. This tool adds a gradual fade-in at the beginning and a fade-out at the end, with each duration set in seconds, and exports the result as an MP3.
When it helps
- Smoothing the edges of a song excerpt you cut for a video or slideshow
- Softening the start of a podcast intro or background music bed
- Removing the click at the start or end of a trimmed recording
Tips
- Short fades of 0.5 to 2 seconds suit speech and clips; music endings often sound natural with 3 to 6 seconds.
- Set either value to 0 to skip that fade, for example a fade-out only on a song that already starts cleanly.
- If you are also trimming, trim first and fade second so the fade lands on the new edges.
Good to know
Quick answers about fade audio in your browser.
For background music under a video, 2 to 4 seconds is common. For a full song ending, 5 seconds or more feels like a radio-style fade.
Yes. Set the fade-out duration to 0 and only the start of the file will be faded.
Yes. There is no sign-up, no watermark and no limit on how many files you process.
No. Files are read and processed locally in your browser, so they never leave your device.
Related tools
Part of the Audio Editor collection.