Add Fade In & Fade Out to Audio Online — Free
AudioKit's fade in fade out tool lets you add smooth volume transitions to any audio file directly in your browser. Remove jarring hard cuts from music, podcasts, voice recordings, and sound effects. No software to install, no account required.
What is Audio Fade In / Fade Out?
A fade in gradually increases volume from silence to full level at the start of a track. A fade out smoothly decreases volume to silence at the end. These transitions are used in virtually every professionally produced song, podcast, and film soundtrack to create natural, polished audio.
How to Add Fade In & Fade Out Online
- Upload your audio file (MP3, WAV, FLAC, OGG, or M4A)
- Set your fade in duration (how many seconds to ramp up from silence)
- Set your fade out duration (how many seconds to ramp down to silence)
- Click Apply and download your faded audio file instantly
Common Uses for Audio Fade Effects
- Music production — End songs with a classic fade out instead of a hard cut
- Podcasts — Fade intro/outro music in and out under your voice
- YouTube videos — Smooth background music transitions between scenes
- Sound effects — Soften aggressive explosion or impact sounds with a fade in
- Ringtones — Prevent jarring starts when your phone rings
Frequently Asked Questions
Why do professional songs fade out at the end?
Because a hard digital cut to silence sounds jarring and aggressive. A 3–5 second fade psychologically signals to the brain that the song is peacefully ending, not abruptly stopping. It is the standard finishing technique in pop, rock, and electronic music production.
How long should a fade out be?
For music: 3–8 seconds is the industry standard. For podcast intros/outros: 1–3 seconds. For sound effects: 0.5–2 seconds depending on context.
Does fade affect audio quality?
No. The fade is a volume envelope applied on top of your audio. The underlying quality of the file is unchanged.
Is this tool free?
Yes, completely free with no file size limits and no sign-up required. All processing runs in your browser.