Add a fade in, a fade out, or both to an audio file. Smooth an abrupt start or ending in seconds, no software to install
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Accepted: .mp3,.wav,.flac
A track that starts or stops abruptly can sound jarring, whether it is a song, a podcast intro, or a voice recording. The Audio Fade In/Out tool on File Tools Online smooths that out automatically: upload your audio file, and the tool gradually raises the volume at the start, lowers it at the end, or both, so your file starts and finishes cleanly instead of cutting in or out with a hard edge. There is nothing to install and nothing to learn, you upload a file and download the result. It works the same way whether you are fixing a rough cut or preparing a finished track for release, and the same process applies whether the file is a full song, a short clip, or a spoken recording.
Open the Audio Fade In/Out tool and choose the file you want to smooth out. Drag and drop it, or select it from your device.
Pick whether you want the volume to rise at the start, fall at the end, or both.
Get your finished file with a smooth start and finish, ready to use or share.
Processing usually only takes a moment, since applying a fade is a lighter task than converting or re-encoding a whole file. Your original audio is not changed, you simply receive a new file with the fade applied.
Replace an abrupt cut with a gradual rise or fall in volume at the start or end of your track.
Skip the audio editor, upload your file and download the faded result directly.
The tool runs in your browser, no desktop software or plugin required.
Add a fade to an audio file from a laptop, desktop, or phone, using nothing more than a web browser.
Your file is processed over HTTPS and automatically deleted from our servers within 30 minutes.
There is no cost to fade an audio file or download the result.
A fade in gradually raises an audio file's volume from silence up to its normal level over a short span at the start of the track, instead of the sound starting all at once. A fade out does the reverse, gradually lowering the volume down to silence over a short span at the end, instead of the track cutting off abruptly. Both are simple volume adjustments applied over time, they do not change the pitch, speed, or content of the recording itself, only how smoothly it begins and ends.
The effect is small on paper but easy to notice in practice. A recording that starts or stops with a hard edge tends to sound unfinished or accidentally cut, even if nothing about the underlying audio is actually wrong. A fade is often the last small step that makes a file sound intentional rather than clipped.
Fading audio in or out is one of the simplest ways to make a recording sound more finished, and it comes up in a wide range of everyday situations, from finishing a personal project to preparing something for a wider audience.
A fade in and a fade out both happen within a single track, one smooths the beginning, the other smooths the end. A crossfade is different: it blends the end of one track into the beginning of another, so one fades out at the same time the next fades in, overlapping the two. This tool applies a fade in and fade out to a single audio file. It does not blend two separate files together into a crossfade.
Knowing which one you actually need matters. If you are finishing a single track or clip, a fade in or fade out is what you want. If you are trying to smoothly transition from one song into another, that is a crossfade, and it involves working with two files together rather than smoothing the edges of one.
Adding a fade traditionally means opening a dedicated audio or video editor, finding the right effect, and dragging a fade handle by hand. The Audio Fade In/Out tool on File Tools Online skips all of that. There is nothing to download and nothing to install, whether you are on Windows, Mac, or anything else, you upload your file directly in your browser and the fade is applied automatically. If you only need a quick fade and do not already have editing software installed, this gets you the same result without adding another program to your computer.
The tool accepts common audio formats such as MP3 and WAV, so in most cases you can upload a file directly without converting it first. If your file is in a less common or older format, run it through the Audio Converter first, then apply the fade to the result.
The exact fade duration and curve options available are set inside the Audio Fade In/Out tool's own interface and can change as the tool is updated. Check the tool directly for the specific options currently available before you upload a file. As a general rule, a shorter fade of a second or two works well for tightening up a rough cut, while a longer fade of several seconds suits the ending of a full song or mix.
Because the Audio Fade In/Out tool runs in your browser rather than as installed software, it works the same way on Windows, Mac, Chromebook, Android, and iPhone. There is nothing tied to one operating system, so you can fade an audio file on whichever device you happen to have it on.
A fade in gradually raises the volume from silence up to normal level at the start of a track. A fade out gradually lowers the volume down to silence at the end. Both smooth out an otherwise abrupt start or stop.
Yes. You can apply a fade in at the start, a fade out at the end, or both to the same audio file.
The tool accepts common audio formats such as MP3 and WAV. If your file is in a less common format, convert it first with the Audio Converter, then apply the fade to the result.
No. Upload your audio file and the fade is applied automatically, no editing software required.
Yes. Upload your file to the Audio Fade In/Out tool and download the result, there is no cost to use it.
Yes. The tool runs in your browser, so it works the same way on Windows, Mac, Android, and iPhone without installing anything.
A fade happens within a single track, smoothing its start or end. A crossfade blends two separate tracks together, fading one out while fading the next in at the same time. This tool applies fades to a single file, it does not crossfade two files together.
No. A fade only adjusts volume over time. The pitch and speed of the recording stay the same.
A shorter fade of a second or two usually suits tightening up a rough cut, while a longer fade of several seconds tends to suit the ending of a full song or mix. The exact duration options available are set inside the tool itself.
This tool works on audio files. If you need to fade the audio track within a video, check the other video tools on File Tools Online for options that work directly with video files.
No. You receive a new file with the fade applied, your original upload is not altered.
Your file is processed over HTTPS and automatically deleted from our servers within 30 minutes.
File Tools Online is a collection of free, browser based tools for working with audio, video, PDF, and image files, built for people who need a quick, reliable result without installing software. The Audio Fade In/Out tool is one part of a larger set of audio tools, so once your file starts and ends smoothly, you can trim it, normalize it, or convert it using the other tools in the same toolkit.
A hard cut at the start or end of a recording is one of the easiest things to fix, and one of the easiest things to overlook. Adding a clean fade takes a rough file most of the way toward sounding finished, without opening an editor or learning a new piece of software.