Audio Fade In Out Online

Set fade in and fade out lengths in seconds so a track eases in and ends without a hard cut. Total duration tells it where the tail sits.

Drop a file or click to upload

How to use

  1. Drop an MP3, WAV, M4A or the audio track of a video.
  2. Set fade in, fade out, and the total duration in seconds.
  3. Click Process and download the faded file.

Frequently asked questions

Why do I have to enter the total duration?

The fade out is positioned by counting back from the end, so the tool needs to know where the end is. Enter the track length in seconds and the tail lands correctly.

What fade lengths sound natural?

One second in and two out is a safe default for music. For speech, half a second at each end is enough to kill the click without swallowing the first word.

Is the fade linear or curved?

Linear in amplitude, which is what ffmpeg's afade applies by default. It reads as a slightly fast start to the fade out compared with a logarithmic curve.

Can I fade only one end?

Yes. Set the side you do not want to zero and it is skipped, so you can drop a hard cut at the start while still easing out at the finish.

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