Audio Volume Booster & Loudness Amplifier
Boost audio volume up to 500% with our free online audio volume booster. Amplify quiet MP3s, WAVs, and podcasts with peak normalization and soft-limiting.
Browser onlyYour data never leaves this device.
Runs entirely in your browser using client-side Web Audio DSP. Your recordings, podcasts, and music files are never uploaded or transmitted to any remote server.
Details: Privacy policy
Select Audio File
Drag & drop an audio file, or click to browse
Supports MP3, WAV, M4A, AAC, OGG, FLAC up to 100 MB • 100% Private local processing
Quiet recordings, muffled voice notes, and low-gain podcasts can be frustrating to listen to on phones or laptop speakers. This free audio volume booster and loudness amplifier elevates your sound files by up to 500% directly within your browser. Utilizing digital signal processing (DSP) and peak normalization algorithms, our tool analyzes the exact waveform dynamics of your track, automatically calculating the maximum amplification headroom without triggering harsh clipping distortion. Toggle our soft-limiter saturation mode to maintain warm, punchy acoustic dynamics even at extreme volume increases, and export the newly boosted audio as an uncompressed, crystal-clear 16-bit WAV file in seconds.
How to use Audio Volume Booster & Loudness Amplifier
- Upload your audio file (MP3, WAV, M4A, AAC, OGG, or FLAC) via drag-and-drop or browsing.
- Adjust the Volume Boost slider from 100% up to 500% or click 'Auto Peak Normalize'.
- Click 'Play Boosted' to audition the amplified sound in real-time with zero lag.
- Click 'Download Boosted Audio' to export the amplified master track as a 16-bit WAV file.
What you get
- Real-time amplified audio playback auditioning custom gain boosts up to 500% (+14 dB).
- Waveform dynamics analysis reporting duration, audio channels, and peak dBFS levels.
- High-fidelity uncompressed 16-bit PCM WAV audio file with applied gain and soft-limiting.
When to use Audio Volume Booster & Loudness Amplifier
- Podcasters and interviewers boosting quiet voice tracks recorded with distant microphones
- Students amplifying low-volume university lecture recordings and recorded seminars
- Video creators increasing voiceover and background sound effect clarity before editing
- Musicians and producers applying clean peak normalization to rough song demos
Frequently asked questions about Audio Volume Booster & Loudness Amplifier
How does the soft limiter prevent digital clipping and audio distortion?
When volume is amplified past 0 dBFS, traditional digital systems hard-clip the signal peaks into square waves, producing harsh crackling distortion. Our soft limiter uses a hyperbolic tangent (tanh) analog tape saturation curve that gently compresses peaks while preserving sonic warmth and clarity.
What does Auto Peak Normalize do?
Auto Peak Normalize scans your entire audio waveform for its highest single peak and calculates the exact mathematical multiplier needed to bring that peak to 0 dBFS without exceeding it. This guarantees maximum possible loudness without any compression or clipping.
Is my audio uploaded or saved on any external servers?
No. All decoding, gain manipulation, soft limiting, and WAV encoding execute 100% locally in your client browser using Web Audio API and TypedArrays. Your files never leave your device.
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