# Audio Fade In and Fade Out Online - Smooth Intros and Endings

> Free online audio fade tool: add a fade-in at the start and a fade-out at the end of MP3, WAV and more, with any length. Batch supported, runs locally.

- URL: https://qilingtools.com/en/audio/fade
- Category: Audio Tools (https://qilingtools.com/en/audio)
- Tags: [Audio](https://qilingtools.com/en/tags/audio), [Music](https://qilingtools.com/en/tags/music)
- Last updated: 2026-10-26
- Price: Free, no sign-up
- Privacy: Runs locally in the browser; files are never uploaded

Ramp the opening up from silence and let the ending taper off, so nothing starts or stops abruptly. Useful for ringtones, video scores and podcast intros — and you can run a whole folder at once.

## How to use

1. Upload one or more audio files
2. Set the fade-in and fade-out lengths
3. Click start and download the result

## Features

- Fades from 0 to 30 seconds
- Batch supported
- MP3 / WAV / M4A / FLAC / OGG / OPUS output
- FFmpeg runs locally

## FAQ

### How long should a fade be?

Two to five seconds sounds natural for music; half a second to one second is plenty for ringtones and short effects; podcast intros usually use about three seconds.

### Are my files uploaded to a server?

No. Everything runs locally in your browser via WebAssembly. Files never leave your computer and are discarded when you close the page.

### Do I need to sign up or pay?

No. The site is completely free, requires no account, has no usage limits and adds no watermarks.

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- [Convert Audio](https://qilingtools.com/en/audio/convert): Free online audio converter: convert between MP3, WAV, M4A, AAC, FLAC, OGG and OPUS with selectable bitrate. Powered by FFmpeg, processed locally, no upload.
- [Trim Audio](https://qilingtools.com/en/audio/trim): Free online audio trimmer: set start and end times to cut a clip from MP3, WAV, M4A and more. Make ringtones. Processed locally, no upload.
- [Merge Audio](https://qilingtools.com/en/audio/merge): Free online audio merger: join MP3, WAV and other audio files in order into one file, mixed formats supported. Processed locally, no upload.
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- [Split Audio](https://qilingtools.com/en/audio/split): Free online audio splitter: cut long recordings, album rips and audiobooks into parts by count, fixed length or specific time points, downloaded as a zip.
- [Mix Audio](https://qilingtools.com/en/audio/mix): Free online audio mixer: play voice, a backing track and background music together, with adjustable levels and a built-in limiter. Processed locally.
- [Change Audio Pitch](https://qilingtools.com/en/audio/pitch): Free online pitch shifter: move a song or recording up to 12 semitones up or down while keeping the tempo — for transposing backing tracks and voice changing.