Audio Volume Booster Online Free — Increase MP3, WAV Volume
Boost MP3, WAV volume up to 10x — Normalize, before/after waveform — No upload
Increase the volume of any audio file online without uploading. Use the gain slider to amplify up to 10x, or enable Auto Normalize to automatically maximize volume to 0dB peak. See before/after waveform comparison before downloading.
Drop audio file here or click to browse
MP3, WAV, OGG, WEBM — Up to 200MB
How the Audio Volume Booster Works
The Web Audio API decodes your file, then an OfflineAudioContext renders the audio with the selected GainNode multiplier. The output is encoded as lossless WAV and downloaded directly. Normalize mode calculates the maximum peak and sets gain to bring it to -0.1 dBFS.
Frequently Asked Questions
What is the maximum volume boost?
Up to 10x gain (approximately +20dB). For most audio, 2x-4x is enough. Beyond that, distortion (clipping) may occur.
What is normalization?
Normalization analyzes the loudest peak in your file and boosts the entire audio so that peak reaches 0dB — the maximum without clipping. It's the safest way to maximize loudness.
Will boosting cause clipping or distortion?
The waveform preview shows red clipping indicators if gain is too high. Reduce gain or use normalize instead of manual boosting to avoid distortion.
What is the output format?
Output is downloaded as WAV (lossless). Convert to MP3 or OGG using the Audio Converter tool if needed.
Can I boost specific frequency ranges?
For frequency-specific boost, use the Audio Equalizer tool. The Volume Booster applies uniform gain to the entire audio.