Free Online Reverb Effect
Add a sense of space: from a bathroom to a cathedral.
What is this tool
AudioToolKit adds reverb to audio online for free, rendering the effect entirely in your browser. Set the room size from a 0.2 s close space to a 10 s hall and the wet mix for how much effect you hear. Six room presets and a vocal preset are included. The processed track downloads as MP3 for sharing or WAV for lossless quality, and the file never leaves your device.
Drag and drop your files here
or
MP3, WAV, M4A, AAC, OGG, FLAC, AIFF, AIF, OPUS, WMA, AMR — up to 25 MB per file
0 = dry, 1 = fully wet.
Output
Reverbed MP3 or WAV
Accepted formats
.mp3, .wav, .m4a, .aac, .ogg, .flac, .aiff, .aif, .opus, .wma, .amr
Why use this free tool
Reverb places a dry signal in a virtual room. Set the decay time for the space size and the wet level for how much of the effect you hear — a little goes a long way on vocals.
How does the free reverb work?
- 1
Upload the track or vocal.
- 2
Set the room size (decay) and the wet mix.
- 3
Press Process and download the result.
Frequently asked questions
What do decay and wet mean?
Decay is the room size in seconds — 0.3 s is a bathroom, 8 s a cathedral. Wet is the mix: 0.5 is 50% effect, 50% original.
Are there presets?
Yes — six room presets plus a vocal reverb preset, each with tuned settings.
Is the file uploaded?
No, the reverb renders in your browser.
Related tools
More answers in the Help Center.