Fade Audio

📉
Click to upload or drag and drop

Audio files only (Max 10MB)

ℹī¸ How it works:
  • Upload your audio file
  • Set fade in and fade out with the sliders
  • Download the result

Add Fade In and Fade Out to Audio Online

Give your audio a smooth start and ending. A fade in gradually raises the volume from silence at the beginning, and a fade out eases it back down to silence at the end — no more abrupt starts or hard stops. Set each fade with a slider and download the result. No sign-up and no watermarks.

How to Fade Audio

  1. Click the upload area above or drag and drop your audio file (up to 10 MB).
  2. On the next screen, set the fade in and fade out length with the sliders (0 to 10 seconds each). You can also play the original to judge the timing.
  3. Apply the fades and download your audio.

Features

  • Fade in – gradually raise the volume from silence at the start
  • Fade out – smoothly lower the volume to silence at the end
  • Slider control – set each fade from 0 to 10 seconds, in 0.1 second steps
  • Both at once – apply a fade in and a fade out in a single pass

When to Use Audio Fades

  • Podcasts – smooth intros and outros instead of a hard cut
  • Music – a gentle ending or a soft opening for a track
  • Presentations – fade background music in and out cleanly
  • Video clips – prep audio with fades before adding it to a video
  • Ringtones – make a tone that eases in rather than jumping in

Frequently Asked Questions

Fade in raises the volume from silence to full at the start of the audio. Fade out lowers the volume from full to silence at the end. You can use either on its own, or both together.

The fade itself only shapes the volume at the start and end, and leaves the rest of the audio alone. There is one thing worth knowing for compressed formats: saving the file means encoding it again, and MP3s are written at 192 kbps. That is a high quality setting and matches or beats most MP3s, but if your original was 320 kbps you will get a slightly smaller file back. WAV and FLAC are lossless, so they are unaffected.

You can upload MP3, WAV, OGG, FLAC, AAC, M4A and WMA, up to 10 MB. Upload a WMA and you will get a WAV back, since WMA can be read but not written. Need a different format afterwards? Use our Convert Audio tool.

Upload it, leave the fade in at zero, and set the fade out slider to how many seconds you want the ending to take. Around 4 to 6 seconds is the usual choice for music — long enough to feel deliberate rather than like the file was cut off. The same applies to any audio, not just songs: a recording, a podcast outro or a voiceover all fade the same way. Set the fade in instead to make audio start quietly, or use both sliders together to make it start and end quietly.

Each fade can be set anywhere from 0 to 10 seconds, but the right length depends on what the audio is. For speech — a podcast, a voice memo, narration — half a second to one second is plenty; any longer and it sounds like the speaker is being faded out mid-sentence. For music, 3 to 6 seconds at the end feels natural. For background music under a voice, 2 to 3 seconds works well at both ends. For a ringtone or alert, keep it under a second so the sound still grabs attention.

Usually because the fade is measured from the true end of the file, and there is silence sitting there. If your recording has two seconds of nothing after the last word, a two-second fade out spends itself entirely on that silence and the audio still stops dead. Trim the trailing silence off first with Trim Audio, then fade — in that order the fade lands where you can hear it.

Not directly — the fades here are anchored to the beginning and the end of the file. To fade at a point in the middle, cut the file there with Trim Audio, fade the pieces separately, then put them back together with Join Audio. If what you actually want is one track blending into another, Join Audio has a crossfade built in and will do it in one step.

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