About this tool
This volume changer scales the loudness of an audio file. Choose a simple gain multiplier to make a clip louder or quieter, or switch to peak-normalize mode to automatically scale the audio so its loudest point sits at a target level (dBFS) you set.
The file is decoded to raw samples, multiplied on your device, and re-packaged as WAV or MP3 — your audio never leaves your device and no server is involved. A built-in clip guard warns you when a gain would push the signal past 0 dBFS so you can avoid distortion.
It is ideal for rescuing a recording that came out too quiet, taming one that is too hot, or matching the level of several clips before you join them together.
Frequently asked questions
What is the difference between gain and normalize?
Gain multiplies every sample by a fixed factor (2× is roughly +6 dB). Peak-normalize measures the current loudest sample and scales the whole clip so that peak lands exactly on your chosen target, such as −1 dBFS.
What is dBFS and clipping?
dBFS is loudness relative to the digital maximum, where 0 dBFS is the ceiling. Pushing peaks above 0 dBFS causes clipping (harsh distortion); the tool warns you and hard-limits to 0 dBFS if a gain would clip.
Which formats work and is it lossless?
Load MP3, WAV, M4A and other browser-decodable files. WAV output stays lossless 16-bit PCM; MP3 output is a lossy re-encode at your chosen bitrate.
Is my audio uploaded?
No. All decoding, gain adjustment and encoding run inside your browser, so the audio never leaves your device.