offlinewebtools.com — free, watermark-free browser tools that stay on your device with nothing uploading to our servers

Audio Fade In/Out

Add professional fade in and fade out effects to your audio. Choose from linear, exponential, or logarithmic curves for smooth, natural-sounding transitions.

Free to use, no watermarks, runs in your browser—nothing uploads to our servers

Source file

Files are processed locally in your browser using WebAssembly.

Fade In Duration (seconds)

Gradual volume increase at start (0 = no fade in)

Fade In Curve

Fade Out Duration (seconds)

Gradual volume decrease at end (0 = no fade out)

Fade Out Curve

Fade Guidelines

• Music: 2-3s fade in, 4-5s fade out (exponential curve)
• Podcasts: 0.5-1s fade in, 1-2s fade out (linear curve)
• Sound effects: 0.1-0.5s fades (linear curve)
• Ambient/background: 5-10s fades (exponential curve)

Report a bug

If this tool misbehaves, share a quick summary so we can investigate. We include the tool URL automatically—no need to copy and paste.