Fade In & Fade Out
Add fade in & fade out to your audio
Apply smooth fade-in and fade-out effects with adjustable duration and curve shape. Choose from linear, exponential, logarithmic, or S-curve. 100% private — runs entirely in your browser.
Drop your audio file here
or click to browse
FLAC
WAV
AIFF
ALAC
MP3
AAC
OGG
M4A
OPUS
Decoding audio...
Frequently Asked Questions
A fade in gradually increases the volume from silence to full level at the beginning of an audio file. A fade out gradually decreases the volume to silence at the end. This creates smooth transitions instead of abrupt starts and stops.
Linear fades at a constant rate. Exponential starts slow and accelerates (sounds more natural for fade-ins). Logarithmic starts fast and slows down (natural for fade-outs). S-Curve starts slow, speeds up in the middle, then slows again (the smoothest option).
You can import FLAC, WAV, AIFF, ALAC, MP3, AAC, OGG, M4A, and OPUS files. For output, choose between WAV (16/24-bit), AIFF (16/24-bit), MP3 (128-320 kbps), or OGG (96-256 kbps).
Yes. Use the Play with Fades button to hear exactly how the fade-in and fade-out will sound before exporting.
No. Everything runs locally in your browser using Web Audio technology. Your audio file never leaves your device.
No. SoniqTools Fade In / Fade Out lets you add professional fade effects in seconds — choose from linear, exponential, logarithmic, or S-curve shapes, preview the result in real time, and download. No installation, no learning curve.